---
title: "Top 12 Best Bit to Drill Through Stainless Steel Fast!"
url: https://midwestmotorcycletraining.com/best-bit-to-drill-through-stainless-steel/
date: 2026-11-01
modified: 2026-11-01
lang: en
author: "admin@midwestmotorcycletraining.com"
description: "Best bit to drill through stainless steel reviewed and compared. Discover top picks that deliver speed, durability, and precision for your drilling needs."
categories:
  - "Our Picks"
word_count: 5275
---

# Top 12 Best Bit to Drill Through Stainless Steel Fast!

Drilling through stainless steel rarely goes smoothly with just any drill bit. The best bit to drill through stainless steel is built to handle the hardness and toughness of the material without dulling quickly or causing excessive heat. A cheap or incorrect bit will often slip, burn out, or leave a rough hole that needs fixing.

For anyone working with stainless steel regularly, using a dedicated bit designed for this metal is crucial to avoid delays and wasted materials.

Good bits for stainless steel usually have a high-quality cobalt or titanium coating that helps resist wear and keeps the cutting edge sharper for longer. The tip angle matters too; bits designed for metal often feature a 135-degree split point that reduces walking and improves control. Size fitting the drill chuck securely and maintaining steady pressure without overheating the bit also play major roles in providing clean, precise holes without frequent bit replacements.

## Need a Quick Check?

| Image | Product | Price |
| ----- | ------- | ----- |
| Our Top Picks 1![](https://m.media-amazon.com/images/I/71Dojcaq+uL._SX425_.jpg) | Cobalt M35 13-Piece | [Check Price](https://www.amazon.com/MACXCOIP-Hardened-Stainless-Plastics-Storage/dp/B0BDKR2KFZ/?tag=midwestmotorcycletraining-20) |
| Our Top Picks 2![](https://m.media-amazon.com/images/I/81I5E071F3L._SX466_.jpg) | M35 Cobalt Stubby 5-Piece A | [Check Price](https://www.amazon.com/NordWolf-5-Piece-Stainless-Drivers-Storage/dp/B09WKBLJ25/?tag=midwestmotorcycletraining-20) |
| Our Top Picks 3![](https://m.media-amazon.com/images/I/61T8D4+7U9L._SX466_.jpg) | M35 Cobalt Stubby 5-Piece B | [Check Price](https://www.amazon.com/VALYRIANTOOL-Cobalt-Stubby-Stainless-Drivers/dp/B0CTTPKM83/?tag=midwestmotorcycletraining-20) |

## Our Selected Top 12 Bit to Drill Through Stainless Steel Worth Considering
This list features carefully chosen drill bits designed specifically for stainless steel, highlighting their performance, ideal users, and key advantages and drawbacks. Each review provides practical insights to help select the most suitable option based on durability, efficiency, and ease of use.

### 1. Cobalt M35 Drill Bit Set 13-Piece
[![](https://m.media-amazon.com/images/I/71Dojcaq+uL._SX425_.jpg)](https://www.amazon.com/MACXCOIP-Hardened-Stainless-Plastics-Storage/dp/B0BDKR2KFZ/?tag=midwestmotorcycletraining-20)Sharpness and durability stand out when tackling tough metals like stainless steel with this set. Suited for anyone needing reliable bits for hardened materials, these cobalt M35 bits provide a solid balance of size variety and strength.

Their ability to maintain sharpness on challenging materials makes them a go-to option for demanding drilling tasks.

Setup is straightforward thanks to the included index storage case that keeps the 13 bits organized and easy to find. The 135-degree point tip helps the bits stay centered on the workpiece to minimize walking. Users benefit from the twist design that efficiently removes chips during drilling, speeding up the process whether working on metal, wood, or plastic.

The range of sizes covers most common drilling needs in one kit.

Performance on hardened metals and stainless steel is strong, cutting through materials with less wear than standard bits. The M35 cobalt material keeps the bits sharper and more durable compared to typical drill bits. Most praise focuses on their toughness and how well they hold an edge.

Occasional frustration comes from the smaller sizes being prone to breakage if used improperly or with too much pressure.

These bits are praised for toughness and sharpness retention, making drilling through hardened steel smoother. The most common downside involves the smaller sizes breaking easily if handling is careless or drilling speed is too high.

Perfect for users needing a versatile set for hard metals requiring durability and precision. Those exclusively cutting softer, easier materials might prefer simpler, less costly bits.

#### Pros

- Durable M35 cobalt material
- Wide size range covers many tasks
- 135-degree tip prevents walking
- Efficient chip removal

#### Cons

- Smaller bits may break with too much force
- Not ideal for only soft materials

| Specification | Details |
| ------------- | ------- |
| Brand Name | MACXCOIP |
| Number of Pieces | 13 |
| Sizes Included | 1/16" to 1/4" |
| Point Angle | 135 degrees |
| Material | M35 Cobalt |
| Included Components | Drill bits, Index storage case |
[Check Price](https://www.amazon.com/MACXCOIP-Hardened-Stainless-Plastics-Storage/dp/B0BDKR2KFZ/?tag=midwestmotorcycletraining-20)
### 2. M35 Cobalt Stubby Drill Bit Set 5-Piece
[![](https://m.media-amazon.com/images/I/81I5E071F3L._SX466_.jpg)](https://www.amazon.com/NordWolf-5-Piece-Stainless-Drivers-Storage/dp/B09WKBLJ25/?tag=midwestmotorcycletraining-20)Great for anyone tackling tough metals, this set stands out mainly for its M35 Cobalt steel construction, offering durability where cheaper bits tend to fail. Perfect for those needing bit access in tight spots, especially when working on stainless steel or similarly hard materials.

Setup is straightforward with a 1/4-inch hex shank that fits standard and quick-change chucks. The stubby size, ranging from 1.83 to 2.32 inches, makes it easy to drill in cramped spaces without awkward angles. The 135° split point design keeps the bit centered, which helps with fast, clean starts on metal surfaces and reduces walking around the drill hole.

Built tough with precision-ground M35 Cobalt, these drill bits handle stainless steel and other hardened metals well, showing solid wear resistance. Users praise their ability to drill quickly and stay sharp longer than standard bits.

Some find the shorter length limiting when deeper holes are needed, so its compact size is both a strength and a limitation depending on the task.

These drill bits are well-regarded for their toughness and ability to drill through hardened metals without dulling quickly. Common feedback notes the 135° split point helps start holes cleanly, though the stubby design sometimes feels restrictive for deeper applications.

The set is ideal for people often working in tight or awkward spots on stainless steel or similar metals. Those needing longer bits or metric sizes might want to look elsewhere to better fit their projects.

#### Pros

- Durable M35 Cobalt steel construction
- Stubby size for tight spaces
- Split point tip for self-centering drilling
- Compatible with quick change chucks

#### Cons

- Short length limits deep drilling
- Set only includes imperial sizes

| Specification | Details |
| ------------- | ------- |
| Brand Name | NordWolf |
| Model | NW-21012 |
| Set Name | 5-Piece |
| Unit Count | 1 Count |
| Number of Pieces | 5 |
| Item Weight | 16 ounces |
[Check Price](https://www.amazon.com/NordWolf-5-Piece-Stainless-Drivers-Storage/dp/B09WKBLJ25/?tag=midwestmotorcycletraining-20)
### 3. M35 Cobalt Stubby Drill Bit Set 5-Piece
[![](https://m.media-amazon.com/images/I/61T8D4+7U9L._SX466_.jpg)](https://www.amazon.com/VALYRIANTOOL-Cobalt-Stubby-Stainless-Drivers/dp/B0CTTPKM83/?tag=midwestmotorcycletraining-20)Drilling into stainless steel can be frustrating when bits wear out or break easily. These stubby drill bits are designed for tight spaces and tough metals, making them a solid choice for anyone needing precision and durability in metalwork.

Their standout feature is the short length, which lets you reach spots that regular bits can’t.

Setup is straightforward since all the bits have a 1/4-inch hex shank, so they fit standard and quick-change chucks without fuss. The stubby size, ranging from 1-7/8 to 2-5/16, feels sturdy in the hand and makes it easier to work close to walls or inside tight frames.

The 135° split point on the bit tips helps start holes precisely and cuts through metal quickly, saving time on each job.

These bits perform well on stainless steel and other metals thanks to their M35 cobalt steel construction, which resists heat and wear. They hold their edge for longer than regular bits, but some users mention the stubby length can reduce leverage for larger diameters. The multi-blade tip consistently helps with clean starts and less walking, though drilling deep holes isn’t their strong suit.

The cobalt steel construction offers good durability and long life while drilling stainless steel. The stubby size makes it easier to drill in tight areas, but some find it harder to get enough grip on bigger bits because of the shorter length.

People working in confined spaces or on small metal projects will appreciate the design and durability. Those needing to drill larger, deep holes might want to look for longer bits with more reach and leverage instead.

#### Pros

- Compact stubby size fits tight spaces
- Durable M35 cobalt steel resists wear
- 135° split point for accurate starts
- Compatible with standard and quick-change chucks

#### Cons

- Short length limits leverage on larger bits
- Not suited for deep hole drilling

| Specification | Details |
| ------------- | ------- |
| Set Name | VALYRIANTOOL 5-Piece Stubby Drill Bit Set |
| Unit Count | 5 Count |
| Part Number | VACOBALT |
| Brand Name | VALYRIANTOOL |
| Drill Diameter Sizes | 3/32", 1/8", 3/16", 1/4", 5/16" |
| Length | 1-7/8" to 2-5/16" |
[Check Price](https://www.amazon.com/VALYRIANTOOL-Cobalt-Stubby-Stainless-Drivers/dp/B0CTTPKM83/?tag=midwestmotorcycletraining-20)
### 4. EZARC M35 Cobalt Stubby Drill Bit Set 8-Piece
[![](https://m.media-amazon.com/images/I/715qCoLPBiL._SX466_.jpg)](https://www.amazon.com/EZARC-Self-Centering-Coating-Countersink-Stainless/dp/B0H6X2MDSH/?tag=midwestmotorcycletraining-20)M35 cobalt steel combined with a black AlTiN coating makes these bits extremely tough and heat resistant, perfect for drilling stainless steel. Suitable for anyone needing reliable metal drilling tools, the 8-piece stubby set stands out for its ability to maintain sharpness and resist wear during demanding jobs.

Setting up involves using the 1/4 hex shank for secure grip and quick bit changes in drills or impact drivers. The stubby design fits nicely in tight or awkward spots, making hard-to-reach places accessible.

Self-centering tips help the drill bite cleanly without slipping, so you get precise holes more quickly with less fiddling.

The overall build is solid, with each bit designed for long life and stability. It cuts through stainless steel efficiently thanks to the sharp cobalt cutting edge and the wear-resistant coating. Common praise highlights the reduced walking and durable materials, although some note the stubby length limits reach on deeper holes.

The bits drill stainless steel cleanly with little walking thanks to the self-centering tip and tough cobalt material. Most users say the stubby length is great for tight spots but can be restrictive when deeper holes are needed.

Those working in confined areas or on smaller holes will appreciate the design and durability. For larger drilling projects or thicker materials, a longer drill bit set with bigger sizes might be a better fit.

#### Pros

- High heat resistance from M35 cobalt
- Self-centering tip prevents bit walking
- Compact stubby length for tight spaces
- Quick bit changes with 1/4" hex shank

#### Cons

- Stubby length limits drilling depth
- Set lacks sizes above 3/8"

| Specification | Details |
| ------------- | ------- |
| Material | M35 cobalt HSS with black AlTiN coating |
| Set Size | 8-Piece |
| Bit Sizes | 1/8", 3/16", 1/4", 5/16", 3/8" |
| Shank Type | 1/4" hex shank |
| Key Features | Self-centering tip, stubby design |
[Check Price](https://www.amazon.com/EZARC-Self-Centering-Coating-Countersink-Stainless/dp/B0H6X2MDSH/?tag=midwestmotorcycletraining-20)
### 5. Cobalt M35 Drill Bit Set 13-Piece
[![](https://m.media-amazon.com/images/I/71UKATJcUoL._SX466_.jpg)](https://www.amazon.com/Cobalt-Drill-Bit-Set-Stainless/dp/B0FN2TSHDN/?tag=midwestmotorcycletraining-20)Ideal for anyone working regularly with stainless steel or other tough metals, these cobalt drill bits stand out for their durability. They suit professionals and hobbyists who need drill bits that resist heat and maintain sharpness over time.

The biggest strength lies in their ability to tackle hardened metal without losing performance quickly.

Using these drill bits means straightforward setup thanks to the round straight shank that fits most drill chucks securely. The 135° split point design keeps the tip from wandering, helping you start holes precisely without extra effort. As you drill, the fully ground twist helps clear metal shavings quickly, reducing heat buildup for more consistent drilling in tough materials.

Drilling through stainless steel or cast iron feels noticeably smoother with these bits compared to standard steel ones. The M35 cobalt alloy and split point tip stay sharp longer, making hard jobs less frustrating.

A common complaint is the lack of sizes larger than 1/4 inch in the set, which can restrict bigger projects. Build quality is solid, and the bit set covers a useful range of small to mid sizes for detailed work.

These drill bits receive praise for how well they hold their edge when drilling hardened metals and stainless steel, making tough jobs last longer without frequent bit changes. The main drawback noted is the limited size range, especially for larger holes, which may require additional purchases.

Those needing to work mostly with smaller holes in metals or wood will find this set reliable and durable. People who regularly drill larger diameter holes or want a fully organized kit may want to explore other options that better fit those needs.

#### Pros
- Resists heat well for longer life- Self-centering tip prevents bit walk- Wide size range for small to medium holes- Efficient chip removal keeps drilling cool
#### Cons
- Does not include bits larger than 1/4 inch- Set lacks case for organization
| Specification | Details |
| ------------- | ------- |
| Material | Premium High Speed Steel M35 (Cobalt 5%) |
| Point Angle | 135° Split Point Design |
| Included Sizes | 1/16 to 1/4 inch (13 pieces) |
| Applicable Materials | Hardened Metal, Stainless Steel, Cast Iron, Wood, Plastic |
| Brand | SEDIANAS |
[Check Price](https://www.amazon.com/Cobalt-Drill-Bit-Set-Stainless/dp/B0FN2TSHDN/?tag=midwestmotorcycletraining-20)
### 6. ZELCAN Titanium Step Drill Bit Set 10 Sizes
[![](https://m.media-amazon.com/images/I/61DqZlQSkwL._SX466_.jpg)](https://www.amazon.com/CO-Z-Titanium-Drilling-Cutting-Electrician/dp/B076QC5BWR/?tag=midwestmotorcycletraining-20)Titanium coating and the step drill’s unique two-flute design make a noticeable difference for anyone working on stainless steel or various sheet metals. Ideal for those needing precision and durability, it’s best for drilling multiple hole sizes quickly without constantly swapping bits.

Setup is straightforward thanks to the tri-flatted shank, which fits tightly in power tools and prevents slipping. Its design clears metal chips fast and avoids clogging, keeping the drill bit cooler during use.

The set includes 10 step sizes, so you have a broad range at hand to handle different hole diameters through materials like iron, aluminum, and plastics besides stainless steel.

The high-speed steel core paired with titanium coating handles tough materials well and lasts through frequent drilling without dulling fast. It’s built to resist corrosion and heat, which is key for metal work. While most appreciate its chip-clearing ability, some mention the bit can be heavy compared to simpler models, which may affect comfort during longer sessions.

The drill bits are praised for effective chip clearing and lasting sharpness thanks to titanium coating and high-speed steel. Common feedback notes the weight and learning curve when adjusting to this type of step bit for precise hole sizes.

Anyone regularly working with sheet metals or stainless steel needing multiple hole sizes will find the set handy and durable. Casual users or those requiring lightweight tools might prefer more basic, single-size bits instead.

#### Pros

- Tri-flatted shank prevents slipping in chuck
- Titanium coating resists rust and heat well
- Automatically deburrs holes during drilling
- Two-flute design clears chips efficiently

#### Cons

- Feels heavier than basic drill bits
- May take time to master drilling technique

| Specification | Details |
| ------------- | ------- |
| Brand Name | CO-Z |
| Model | SDB-2017-01 |
| Set Name | ZELCAN 10 Sizes Step Drill Bit Set |
| Number of Pieces | 10 |
| Unit Count | 1 Count |
[Check Price](https://www.amazon.com/CO-Z-Titanium-Drilling-Cutting-Electrician/dp/B076QC5BWR/?tag=midwestmotorcycletraining-20)
### 7. M35 Cobalt Drill Bit Set 21-Piece
[![](https://m.media-amazon.com/images/I/81MyDbJMKIL._AC_SX569_PIbundle-21,TopRight,0,0_SH20_.jpg)](https://www.amazon.com/Crosstar-Cobalt-Drill-Hardened-Stainless/dp/B0FBRY3KCS/?tag=midwestmotorcycletraining-20)Crosstar M35 Cobalt Drill Bit Set 21-Piece shines at drilling through stainless steel and other hardened metals. Ideal for professionals and serious DIY enthusiasts dealing with tough materials regularly. Its biggest strength lies in the durable M35 cobalt steel combined with a heat-resistant TiAlN coating that extends bit life.

Setup is straightforward, and the bits fit standard drills without any hassle. The 21-piece kit offers a range of sizes, conveniently stored in a compact index case. Day-to-day, the TiAlN coating really helps manage heat during longer drilling, reducing friction noticeably.

Handling the drill feels balanced thanks to the solid yet precise design of each bit, making steady drilling easier.

Performance-wise, drilling through stainless steel and other hard metals feels smooth with minimal wobble. The M35 cobalt alloy stands up well to repeated use without dulling quickly. The build quality includes a titanium aluminum nitride nano-coating that tolerates very high temperatures, far beyond typical drilling demands.

Praised for longevity and heat resistance, the only common complaint involves occasional difficulty when starting holes on very smooth surfaces.

The kit is highly praised for its durability and the ability to resist heat buildup during extended drilling sessions. Heat resistance drastically extends tool life compared to bits without the TiAlN coating. Some mention struggling to begin holes on smooth stainless steel, which requires patience and steady hands.

Those frequently working with hardened metals and stainless steel will appreciate the reliability and variety this set offers. For casual users needing bits for occasional soft metal drilling, a less specialized set might be more budget-friendly and easier to handle.

#### Pros

- Handles hardened metals including stainless steel
- TiAlN coating reduces heat and friction significantly
- Wide range of bit sizes in one set
- Comes with a convenient index storage case

#### Cons

- Challenging to start drilling on very smooth surfaces
- Bits are firmer, requiring careful handling to avoid breakage

| Specification | Details |
| ------------- | ------- |
| Brand Name | Crosstar |
| Model | CST-SCMHZ |
| Material | M35 cobalt high-speed steel (5% cobalt) |
| Coating | Titanium Aluminum Nitride (TiAlN) |
| Set Size | 21 pieces |
| Drilling Hardness Capability | Up to 60 HRC |
[Check Price](https://www.amazon.com/Crosstar-Cobalt-Drill-Hardened-Stainless/dp/B0FBRY3KCS/?tag=midwestmotorcycletraining-20)
### 8. Cobalt M35 Drill Bit Set 13-Piece
[![](https://m.media-amazon.com/images/I/71dpcqd-McL._SX466_.jpg)](https://www.amazon.com/STROTON-Cobalt-Drill-Stainless-Plastic/dp/B0BNCKB8DR/?tag=midwestmotorcycletraining-20)Drilling through tough materials like stainless steel can be demanding, yet this cobalt drill bit set handles the job with notable durability. Ideal for anyone dealing with heavy-duty metalwork, its standout feature is the true 5% cobalt steel that extends tool life and heat resistance during use.

The set comes with 13 pieces, covering a range of sizes, neatly packed in a case for easy storage. Its split point design means less wandering on the metal surface, making setup quicker and drilling more precise. Day-to-day, it stays sharp well, resisting wear when working on steel plates or cast iron.

Built from genuine cobalt ore sourced by the manufacturer, these bits endure higher temperatures and rough use, lasting significantly longer than typical bits. While they excel under pressure, some find the price a bit higher. They work cleanly through bolts and hardwood but may require steady hands to avoid drill slips on smooth stainless steel.

Users praise the extended durability and heat resistance thanks to the real 5% cobalt content, allowing for multiple uses on tough materials without quick dulling. A common drawback is the steeper price point compared to typical drill bits, which might not suit casual or occasional drilling work.

Ideal for professionals or enthusiasts who frequently drill metals like stainless steel or cast iron and value longevity over cost. Those only drilling lightly or infrequently could consider less expensive options that are easier on the wallet.

#### Pros

- High heat and wear resistance
- Split point prevents wandering on metal
- Varied sizes for different tasks
- Longer tool life than regular bits

#### Cons

- Cost is higher than standard drill bits
- More skill needed to maintain steady drilling

| Specification | Details |
| ------------- | ------- |
| Brand Name | STROTON |
| Model | M35-Co5-inch-S |
| Number of Pieces | 13 |
| Material | Premium True 5% Cobalt Steel |
| Included Components | Cobalt Drill Bits and Case |
[Check Price](https://www.amazon.com/STROTON-Cobalt-Drill-Stainless-Plastic/dp/B0BNCKB8DR/?tag=midwestmotorcycletraining-20)
### 9. M35 Cobalt Drill Bit Set 13-Piece
[![](https://m.media-amazon.com/images/I/71e+LZhA0TL._SX466_.jpg)](https://www.amazon.com/EASTPACE-Cobalt-Stainless-Plastic-Indexed/dp/B0DYCY681B/?tag=midwestmotorcycletraining-20)Heavy-duty durability makes this set a dependable choice for anyone working with stainless steel. Its standout feature is the 5% cobalt steel that keeps the bits sharp through tough use. Great for people who need reliable, precise drilling without constantly switching out bits.

Setup is straightforward with an included plastic index box keeping all 13 pieces organized. Sizes range from 1/16 to 1/4 inch, covering most drilling needs. The 135° split point design helps the bits start drilling cleanly without wandering, saving time and effort on every hole.

Chips clear quickly during use, so drilling stays smooth.

Cutting through stainless steel is consistent and efficient thanks to the premium cobalt material and full grinding process. The bits hold up well under repeated use with minimal dulling.

Praise often goes to their durability and fast cutting. Some mention the smaller sizes can break if pushed too hard, so careful pressure is best with fine bits.

The bits are praised for lasting through hard materials with little dulling, although the fine sizes require careful handling to avoid snapping. Drilling stays accurate thanks to the split point design but some users find the small bits delicate for tougher jobs.

People drilling stainless steel regularly and needing a versatile and tough set will find these bits suitable. Those who mainly work with very fine or delicate tasks might want bits designed specifically for small-scale precision. The included storage case helps keep bits ready for any job.

#### Pros

- Durable 5% cobalt steel
- 135° split point for self-centering
- Wide size range in one set
- Plastic case for neat storage

#### Cons

- Smaller bits prone to break if forced
- Limited guidance on bit maintenance

| Specification | Details |
| ------------- | ------- |
| Set Name | 13Pcs M35 Cobalt Drill Bit Set |
| Unit Count | 13 Count |
| Manufacturer | EASTPACE |
| Material | 5% Cobalt Steel |
| Included Sizes | 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4 inch |
[Check Price](https://www.amazon.com/EASTPACE-Cobalt-Stainless-Plastic-Indexed/dp/B0DYCY681B/?tag=midwestmotorcycletraining-20)
### 10. BOSCH CO14B Cobalt Drill Bit Set 14-Piece
[![](https://m.media-amazon.com/images/I/510IVXUDjfL._SX466_.jpg)](https://www.amazon.com/Bosch-CO14B-pc-Cobalt-Drill/dp/B07Q9HNTBH/?tag=midwestmotorcycletraining-20)Made with an 8% cobalt M42 alloy, this drill bit set is designed specifically for tackling tough metals like stainless steel. Ideal for anyone needing durable bits that last longer and handle heat well, its biggest strength is lasting through demanding metal drilling jobs without dulling quickly.

Setup is straightforward with the 14-piece arrangement neatly organized in a case, making it easy to find the right size. The cobalt build ensures these bits withstand high temperatures during extended drilling sessions, while the surface-hardened tips help the bits cut through abrasive and hardened materials smoothly, minimizing the need for frequent replacements.

Performance stands out with its ability to drill through stainless steel, cast iron, and titanium reliably due to the cobalt M42 grade. The hardened tips hold up well under pressure and heat, but some mention the standard jobber length as a limitation depending on task depth.

The build is solid, focusing on durability over lighter weight, which suits heavy-duty applications best.

The bits are praised for durability and heat resistance, making them reliable for metalwork. A common point is the jobber-length design which doesn’t always suit deep or tight holes. Most find the tough cobalt alloy keeps bits sharp after repeated use on stainless steel and other hard metals.

This set suits anyone working regularly with stainless steel or tough metals who needs long-lasting bits. Those needing very long or extra-light drill bits might want to look elsewhere for options better tailored to those specific needs.

#### Pros
- Lasts 10x longer than standard bits- Handles high heat without losing sharpness- Surface-hardened tips for tough materials- Includes a range of sizes in one case
#### Cons
- Jobber-length may limit deep drilling- Heavier than some alternative bits
| Specification | Details |
| ------------- | ------- |
| Brand Name | Bosch |
| Model | CO14B |
| Set Name | 14-Piece Cobalt M42 Metal Drill Bit Set |
| Number of Pieces | 14 Drill Bits |
| Material | 8% Cobalt Alloy |
| Item Type | Metalworking Drill Bits |
[Check Price](https://www.amazon.com/Bosch-CO14B-pc-Cobalt-Drill/dp/B07Q9HNTBH/?tag=midwestmotorcycletraining-20)
### 11. Cobalt Step Drill Bit Set 12-Step
[![](https://m.media-amazon.com/images/I/61QDf0778GL._SX466_.jpg)](https://www.amazon.com/OXMUL-Aluminum-Multiple-Electrician-Mechanic/dp/B08K966N3Z/?tag=midwestmotorcycletraining-20)Bright cobalt color and heavy-duty design stand out immediately, making it suited for anyone who needs to drill through tough metals like stainless steel quickly. Its real strength lies in lasting a long time while working twice as fast compared to regular bits.

The bit fits in standard drill chucks without fuss and cuts through materials like galvanize steel, aluminum, and even wood smoothly. Setup is straightforward since it’s shaped to drill in progressive steps, allowing you to gradually widen holes accurately.

The quality cobalt steel keeps it sharp throughout regular jobs without frequent sharpening.

Handling stainless steel and other metals proves consistent and reliable. The build feels solid and well-made, weighing just under 3 ounces for easy control.

The toughest part users mention is the drill speed control needed to avoid overheating, but the cutting performance remains smooth. It’s sharp and tough enough to work through metal sheets again and again.

This cobalt bit drills stainless steel smoothly like cutting through butter and lasts much longer than regular bits. The main drawback is users need to watch drill speed closely to prevent heat damage during heavier jobs.

Anyone needing fast, long-lasting drilling on hard metals will appreciate this bit. Those requiring a wider variety of hole sizes might prefer a set with multiple pieces instead.

#### Pros
- Longer life compared to standard bits- Drills stainless steel quickly- Works on multiple materials- Sharp edges maintained well
#### Cons
- Requires careful speed control to avoid overheating- Single piece limits hole size range
| Specification | Details |
| ------------- | ------- |
| Brand Name | OXMUL |
| Model | 1 |
| Unit Count | 1 Count |
| Item Weight | 2.9 ounces |
| Number of Pieces | 1 |
| Part Number | SD-M278 |
[Check Price](https://www.amazon.com/OXMUL-Aluminum-Multiple-Electrician-Mechanic/dp/B08K966N3Z/?tag=midwestmotorcycletraining-20)
### 12. M35 Cobalt Step Drill Bit Set 3-Piece
[![](https://m.media-amazon.com/images/I/71G7vF9MmUL._SX466_.jpg)](https://www.amazon.com/Drill-Shank-Drilling-Stainless-Aluminium/dp/B0CP96FNTT/?tag=midwestmotorcycletraining-20)Great for anyone working with stainless steel under 1mm thick, the M35 Cobalt Step Drill Bit Set stands out due to its durability and range of sizes. Its biggest strength lies in the premium M35 high speed steel with 5% cobalt, which handles tough materials better than standard bits.

Using the set is straightforward thanks to the three bits with incremental step sizes, allowing you to drill multiple hole diameters with one bit. This versatility suits jobs where varying hole sizes are needed without changing tools constantly. The box keeps bits organized and protected, making setup and storage easy.

Cutting through stainless steel and other metals is smooth because of the high-quality TiAlN coating and the cobalt steel composition. The build feels solid, with the step design reducing drill wobble. Positive reviews highlight its long-lasting sharpness, while some mention that it’s best for sheets under 1mm and might struggle with thicker metals.

Durability and the ability to stay sharp on stainless steel sheets less than 1mm thick are highly praised. Some point out the limitation that these bits don’t perform as well on thicker or much harder metals. Day-to-day use for thinner sheets shows consistent results without frequent bit changes.

People working mostly on stainless steel, aluminum, or sheet metal up to 1mm will find this set a solid choice. Those handling thicker metals or looking for heavy-duty, larger diameter drilling might want to consider different options better suited for that purpose.

#### Pros

- Durable M35 steel with 5% cobalt for tough metals
- Wide range of hole sizes in one set
- TiAlN coating improves cutting and lifespan
- Compact box for convenient storage

#### Cons

- Best for stainless steel under 1mm thickness
- Not ideal for very thick or hardened metals

| Specification | Details |
| ------------- | ------- |
| Brand Name | ss shovan |
| Material | M35 high speed steel with 5% cobalt |
| Set Name | Unibit Step Drill Bit Set |
| Number of Pieces | 3 |
| Coating | TiAlN Coated Spiral Cone |
| Sizes Included | From 1/4" up to 7/8" across three bits |
[Check Price](https://www.amazon.com/Drill-Shank-Drilling-Stainless-Aluminium/dp/B0CP96FNTT/?tag=midwestmotorcycletraining-20)
## Best Bits for Drilling Stainless Steel Compared

| Product | Number of Pieces | Coating | Suitable Materials | Included Components |
| ------- | ---------------- | ------- | ------------------ | ------------------- |
| **Cobalt M35 13-Piece** | 13 | - | Hardened Metal, Stainless Steel | drill |
| **M35 Cobalt Stubby 5-Piece A** | 5 | - | - | - |
| **M35 Cobalt Stubby 5-Piece B** | 5 | - | - | - |
| **EZARC M35 Stubby 8-Piece** | 8 | AlTiN Coating | Stainless Steel, Metal | Countersink & PH2 Bits |
| **Cobalt M35 13-Piece Alt** | 13 | - | Hardened Metal, Stainless Steel | - |
| **ZELCAN Titanium Step 10-Size** | 10 | Titanium | - | - |
| **M35 Cobalt 21-Piece Set** | 21 | TiAlN Coating | Hardened Metal, Stainless Steel | Storage Case |
| **Cobalt M35 13-Piece Alt2** | 13 | - | - | Drill Bits and Case |
| **M35 Cobalt 13-Piece Set** | 13 | - | - | - |
| **BOSCH CO14B 14-Piece** | 14 | Cobalt M42 | Metal, Cast Iron | - |
| **Cobalt Step 12-Step Bit** | 1 | - | - | - |
| **M35 Cobalt Step 3-Piece** | 3 | TiAlN Coated | Stainless Steel, Sheet Metal | - |
1. Cobalt M35 13-Piece- **Number of Pieces**13- **Coating**-- **Suitable Materials**Hardened Metal, Stainless Steel- **Included Components**drill2. M35 Cobalt Stubby 5-Piece A- **Number of Pieces**5- **Coating**-- **Suitable Materials**-- **Included Components**-3. M35 Cobalt Stubby 5-Piece B- **Number of Pieces**5- **Coating**-- **Suitable Materials**-- **Included Components**-4. EZARC M35 Stubby 8-Piece- **Number of Pieces**8- **Coating**AlTiN Coating- **Suitable Materials**Stainless Steel, Metal- **Included Components**Countersink & PH2 Bits5. Cobalt M35 13-Piece Alt- **Number of Pieces**13- **Coating**-- **Suitable Materials**Hardened Metal, Stainless Steel- **Included Components**-6. ZELCAN Titanium Step 10-Size- **Number of Pieces**10- **Coating**Titanium- **Suitable Materials**-- **Included Components**-7. M35 Cobalt 21-Piece Set- **Number of Pieces**21- **Coating**TiAlN Coating- **Suitable Materials**Hardened Metal, Stainless Steel- **Included Components**Storage Case8. Cobalt M35 13-Piece Alt2- **Number of Pieces**13- **Coating**-- **Suitable Materials**-- **Included Components**Drill Bits and Case9. M35 Cobalt 13-Piece Set- **Number of Pieces**13- **Coating**-- **Suitable Materials**-- **Included Components**-10. BOSCH CO14B 14-Piece- **Number of Pieces**14- **Coating**Cobalt M42- **Suitable Materials**Metal, Cast Iron- **Included Components**-11. Cobalt Step 12-Step Bit- **Number of Pieces**1- **Coating**-- **Suitable Materials**-- **Included Components**-12. M35 Cobalt Step 3-Piece- **Number of Pieces**3- **Coating**TiAlN Coated- **Suitable Materials**Stainless Steel, Sheet Metal- **Included Components**-
## How to Choose the Best Drill Bit for Stainless Steel
Choosing the right drill bit for stainless steel depends on factors like material hardness, coating, and design, which affect durability and cutting efficiency. Selecting the best option ensures smoother drilling, extends tool life, and prevents damage, saving time and reducing costs from frequent replacements or repairs.

### Material and Coating Quality
Using a low-quality bit made of basic steel often leads to fast dulling, especially when tackling tough metals like stainless steel. Bits constructed from **high-speed steel (HSS)** or cobalt alloys stand up better to the challenge, maintaining sharp edges longer.

Cobalt bits are harder and resist wear much more effectively.

Coatings like titanium nitride or black oxide help by reducing heat buildup, which is a major factor in losing sharpness during drilling. These coatings don’t last forever but do extend the bit’s useful life significantly when drilling dense metals.

Choosing bits with these materials and coatings means fewer replacements and smoother drilling.

### Drill Bit Geometry
The tip angle on a drill bit affects how well it starts drilling without slipping or “walking” across stainless steel surfaces. A point angle around 135 degrees is typical because it balances cutting efficiency and control for clean, precise holes.

Flat or split-point designs help reduce wandering and improve accuracy right from the start.

Shank shape also plays a role in daily use; round shanks fit common chucks but can slip if not tightened well. Hex or SDS shanks offer better grip and stability, preventing wobbling that could spoil hole quality or damage the bit, and the material.

### Size and Diameter Range
Drill bit sets often cover a useful range of diameters from 1 mm up to around 13 mm, matching most project needs, like small pilot holes or larger openings for fasteners. Having multiple sizes available avoids using bits that are too large or small, which can stress the bit or damage the metal.

Length matters if drilling deep holes; standard bits might be too short. Longer bits help in those situations but can flex more, so balance length with thickness to keep control during drilling.

### Heat Dissipation Capability
Drilling stainless steel generates significant heat. Low-quality bit designs can trap heat leading to rapid dulling and even warping.

Bits with coatings that reduce friction and features like fluted grooves help clear metal chips and disperse heat during use.

Without proper heat dissipation, bits wear out quickly and cause discoloration or weakening of the steel. The right bit design extends lifespan and preserves the stainless steel’s integrity by maintaining consistent temperature during drilling.

### Compatibility and Fit
Bit shank designs influence how securely a bit fits into drills. Standard round shanks are common but can slip in some chucks, increasing wobble. Hex shanks or those designed for quick-change systems lock in place more tightly and reduce slippage.

Some tools need specific shank types, so matching the bit to either handheld drills or drill presses minimizes hassle and improves safety. A secure fit means smoother drilling and avoids excess wear on both bit and tool.

## Tips for Efficiently Drilling Stainless Steel Without Damaging the Bit
Using a high-speed steel bit with cobalt content works best when drilling stainless steel. The key is keeping the bit cool to prevent overheating and dulling. ** Applying steady, moderate pressure helps maintain control and avoid bit wandering.** Avoid pushing too hard since the metal is tough and can cause rapid wear or breakage.

- Use cutting oil or a lubricant to reduce friction and heat build-up.- Start with a smaller pilot hole before moving to the final size.- Keep the drill speed relatively low, as high speeds create excessive heat.Pausing occasionally allows the bit and material to cool, preserving sharp edges. Securing the stainless steel firmly will minimize movement, which reduces the risk of slipping or damaging the surface finish.

This approach extends bit life and improves hole accuracy when working through stainless steel.

## Common Mistakes to Avoid When Drilling Through Stainless Steel
Applying excessive pressure is a common error; it leads to premature bit wear or breakage rather than quicker drilling. Many overlook the need for a lubricant, which is crucial to control heat and prevent metal surface work hardening. **Using an incorrect drill type or low-quality bit can drastically reduce effectiveness and durability.** Running the drill at too high a speed generates heat that can ruin both the bit and the material.

Another mistake is skipping the pilot hole, which helps center the drill and reduce wandering. Holding the workpiece loosely allows vibrations, causing inaccurate holes or damage to the bit tip.

Rushing through a stainless steel project compromises the quality of the drilled hole and often means replacing tools sooner than necessary. Each of these errors should be avoided to protect both the drill bit and work surface.

## Comparing Carbide and Cobalt Drill Bits for Stainless Steel Applications
Cobalt drill bits contain a higher percentage of cobalt mixed with high-speed steel, making them more resistant to heat and wear. They perform well on harder metals like stainless steel and hold a sharper edge longer than standard bits.

Carbide bits consist of a very hard material made of tungsten carbide; they stay sharp much longer but are more brittle and prone to chipping if not handled carefully. **Choosing between cobalt and carbide often comes down to the balance of durability versus toughness needed for the job.** Carbide shines in high-speed applications and production environments where frequent bit replacement is costly. Cobalt bits are better for hand tools and situations requiring some flexibility in the bit.

Both require coolant for extended life, but cobalt tends to be more forgiving with occasional improper use. Understanding these traits helps select the right bit for drilling stainless steel efficiently and effectively.

## People Also Asked

### How Do I Use a Drill Bit Safely on Stainless Steel?
Use a drill bit at a slow speed and apply steady pressure to avoid slipping or overheating. Wearing safety goggles is important to protect your eyes from metal shavings. Keep the bit cool by occasionally dipping it in cutting oil or water to prevent dulling.

### What Is the Correct Size Drill Bit for Stainless Steel?
Choose a drill bit size that matches the hole diameter you need, commonly starting with a smaller pilot hole before moving to the final size. Incremental steps reduce stress on the bit and improve accuracy through the tough material.

### Can a Drill Bit Damage Stainless Steel If Used Incorrectly?
Drill bits can damage stainless steel if run too fast or without lubrication, causing heat buildup that can harden or warp the metal around the hole. Using the correct bit type and maintaining slow speed help prevent damage both to the steel and the bit.

### How Long Do Drill Bits Typically Last Drilling Stainless Steel?
Drill bit lifespan varies based on bit quality and usage but expect faster wear when drilling stainless steel compared to softer materials. Regularly applying cutting fluid and using the correct speed can extend the bit’s usable life.

### What Are Common Problems When Drilling Through Stainless Steel?
Common problems include bit slipping, overheating, and bit dulling quickly due to stainless steel’s hardness. Using a pilot hole, adequate lubrication, and slower drilling speeds help reduce these issues and produce cleaner holes.

## Conclusion
Choosing the right bit to drill through stainless steel depends mainly on durability, heat resistance, and the ability to maintain sharpness. A bit made from high-speed steel or one with a titanium coating tends to last longer and handle the toughness of stainless steel without dulling quickly. The tip design also matters; a split point tip helps reduce slipping and makes starting the hole easier.

Consider how often you will use the bit and the size of your projects to find a suitable option that fits your workspace and budget. For a clear overview, check the comparison table and detailed picks above to see which one matches your specific needs and drilling habits best.