The Best Drill Bits For Hardened Steel for 2023

Anthony Davis
Oct 4, 2023 7:33 PM

If you are interested in using drill bits for hardening steel, be sure to ask your local hardware store about their specific drill bits. Regular drill bits can easily damage steel, so it's important to find a bit that is specifically designed for hardened steel. These bits are often made from harder materials that last much longer, and they are also resistant to heat.

Top Picks

Best Overall: IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece IRWIN Drill Bit Set is the perfect complement to any tool collection. The set includes a drill bit, a screwdriver, a wrench, and a socket.

Best Budget: XLCMSY Cobalt Drill Bit Set, M35 HSS Metric Straight Shank Twist Drill Heat Resistant Metal Drill Bits Stainless steel, cast iron and wood. 1.5-6.5mm. Use them for any job from drilling holes in metal to cutting wood or plastic.

Editor's Choice: BOSCH CO14B 14 Pc. Cobalt M42 Drill Bit Set This is a set of 14 BOSCH CO14B 14 Pc. Cobalt M42 Drill Bit Set. This set of 14 bits is the perfect complement to your drill set.

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TOP Choice

DEWALT Titanium Nitride Coated Drill Bit Set, Pilot Point, 21-Piece (DW1361)

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SCORE
9.6
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Brand
DEWALT
Prime

Small Bulk Storage size fits inside the Small and Medium ToughCase plus (sold separately) - Ideal for organizing loose bits
DEWALT drill bit set has connectable accessory storage system to optimize storage space more

DEWALT Drill Bit Set, Titanium Nitride Coated, 14-Piece (DW1354) , Yellow

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SCORE
9.6
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It is a simple and easy-to-use tool that allows you to monitor and analyze the performance of your products or services against a specified set of metrics. The Score is a non-technical user-friendly ranking system that is easy to understand and follow. It is a good tool to understand and use before making a purchase decision. Learn more
Brand
DEWALT
Prime

Proprietary PILOT POINT tip delivers speed and clear, burr-free holes which help reduce bit walking
Patented web taper increases the rigidity of the bit to decrease potential for bit breakage more

BOSCH CO14B 14 Pc. Cobalt M42 Drill Bit Set

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SCORE
9.4
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It is a simple and easy-to-use tool that allows you to monitor and analyze the performance of your products or services against a specified set of metrics. The Score is a non-technical user-friendly ranking system that is easy to understand and follow. It is a good tool to understand and use before making a purchase decision. Learn more
Brand
BOSCH
Prime

Surface-hardened tip – penetrates tough abrasive materials
High-heat resistant bits – withstand high-temperature applications for extended periods of time more

IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002)

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SCORE
9.4
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It is a simple and easy-to-use tool that allows you to monitor and analyze the performance of your products or services against a specified set of metrics. The Score is a non-technical user-friendly ranking system that is easy to understand and follow. It is a good tool to understand and use before making a purchase decision. Learn more
Brand
Irwin Tools
Prime

5% Cobalt Alloy Steel For Higher Heat & Abrasion Resistance
29 Piece more

COMOWARE Cobalt Drill Bit Set- 21Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic with Metal Indexed Storage Case, 1/16"-3/8"

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SCORE
9.0
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It is a simple and easy-to-use tool that allows you to monitor and analyze the performance of your products or services against a specified set of metrics. The Score is a non-technical user-friendly ranking system that is easy to understand and follow. It is a good tool to understand and use before making a purchase decision. Learn more
Brand
COMOWARE
Prime

21 PIECES INCLUDED: 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", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8".
HSS WITH 5% COBALT: Durable, Higher Heat & Abrasion Resistance. more

amoolo 1/4" Cobalt Drill Bit(10 Pcs), M35 HSS Metal Drill Bit Set for Hard Metal, Stainless Steel, Cast Iron

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SCORE
9.0
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It is a simple and easy-to-use tool that allows you to monitor and analyze the performance of your products or services against a specified set of metrics. The Score is a non-technical user-friendly ranking system that is easy to understand and follow. It is a good tool to understand and use before making a purchase decision. Learn more
Brand
amoolo
Prime

【90 Days Warranty】If you are not fully satisfied for any reason, please contact us for 100% refund or replacement.
【M35 Cobalt High Speed Steel】Industry grade 6542 high speed steel drill bit set, harder than 4241 HSS used in other similar drill bits set. These drill bits also contain 5% Cobalt, which increases wear-resistance and durability. more

XLCMSY Cobalt Drill Bit Set, M35 HSS Metric Straight Shank Twist Drill Heat Resistant Metal Drill Bits for Hard Metal, Stainless Steel, Hardened Steel, Cast Iron and Wood, 1.5-6.5mm (13 Pcs)

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SCORE
9.0
AI Score

It is a simple and easy-to-use tool that allows you to monitor and analyze the performance of your products or services against a specified set of metrics. The Score is a non-technical user-friendly ranking system that is easy to understand and follow. It is a good tool to understand and use before making a purchase decision. Learn more
Brand
XLCMSY
Prime

【Practical Design】The metal drill bits kit features a straight shank design that makes it easier to fix and precisely machine, saving time and improving work efficiency. It is perfect match for home DIY, workshop or vehicles repair shop.
【Lightweight & Durable】 Designed with a 135 degree split point, these metric drill bits are very lightweight, eliminating the need for a center punch, making cutting faster and less powerful, preventing walking and cutting stainless steel more precisely, thanks to its precision grinding inclined blade design, each bit ensures fast drilling with excellent chip removal. more

Hi-Spec 99 Piece SAE Multi Drill Bit Set. 14 Sizes from 1/16in to 3/8in. Metal, Wood, Drywall & Plastics Drilling with HSS Titanium Steel Bits. Complete in a Tray Case

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SCORE
8.8
AI Score

It is a simple and easy-to-use tool that allows you to monitor and analyze the performance of your products or services against a specified set of metrics. The Score is a non-technical user-friendly ranking system that is easy to understand and follow. It is a good tool to understand and use before making a purchase decision. Learn more
Brand
Hi-Spec
Prime

KEEP IT TOGETHER: A slim storage tray case keeps bits in separate compartments with a foam insert for further protection. Sizes are printed on the case lid underside and its steel catch snaps shut to makes sure it doesn’t unexpectedly pop open
TITANIUM-COATED FOR LIFE: The gold-coloured vapour-deposited Titanium Nitride (TiN) coating improves bit longevity and sharpness. Get increased surface hardness and lubrication properties to improve wear resistance, reduce friction and sticking more

Segomo Tools 230 Piece 135 Degree High Speed Drill Bits | Drill Bit Set | Titanium Drill Bit Set | Drill Bit Kit | Set HSS Titanium Coated Drill Bit - DB230

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SCORE
8.6
AI Score

It is a simple and easy-to-use tool that allows you to monitor and analyze the performance of your products or services against a specified set of metrics. The Score is a non-technical user-friendly ranking system that is easy to understand and follow. It is a good tool to understand and use before making a purchase decision. Learn more
Brand
Segomo Tools
Prime

[ Drill In Different Materials ] This Drill Bit Set is suitable for a bench drill, conventional electric drill and hand drill and ideal for wood, carbon steel, sheet steel, fiberboard, rubber, plywood, PVC, plastic etc.
[ Have Every Size You Need ] This universal drill bit set covers sizes: 28 x 3/64", 27 x 5/64", 20 x 1/8", 10 x 5/32", 12 x 3/16", 8 x 15/64", 8 x 9/32", 3 x 5/16", 2 x 23/64", 1 x 1/2", 27 x 1/16", 27 x 3/32", 20 x 9/64", 10 x 11/64", 10 x 7/32", 12 x 1/4", 2 x 19/64", 2 x 21/64", 1 x 3/8". more

Cobalt Drill Bit Set - 13 Piece M35 Cobalt Drill Bits with Storage Case - Perfect Drill Bits for Metal, Hardened & Stainless Steel, Cast Iron, and More!

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SCORE
8.4
AI Score

It is a simple and easy-to-use tool that allows you to monitor and analyze the performance of your products or services against a specified set of metrics. The Score is a non-technical user-friendly ranking system that is easy to understand and follow. It is a good tool to understand and use before making a purchase decision. Learn more
Brand
Owl Tools
Prime

M35, Fully Ground, 135° Split Point - Our Drill Bits Contain 5% Cobalt, Are Fully Grounded for a Precision Drilling Diameter. 135° Split Point Design Makes it Easier to Drill Repeated Holes in Harder Materials.
SET OF 13 COBALT DRILL BITS - In the following imperial sizes 1/4", 15/64", 7/32", 13/64", 3/16", 11/64", 5/32", 9/64", 1/8", 7/64", 3/32", 5/64", 1/16" more

Last update on 2023-10-04 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

4.3

3 ratings

FAQs

What drill do I need for hardened steel?

A standard drill bit is good for hardened steel.

How do you drill a hole in hardened steel?

The best way to drill a hole in hardened steel is with a hand-held, powered drill. Use a slow speed and be sure to hold the drill at an angle so that the bit goes through the steel easily.

What type of drill bit is best for hardened steel?

A standard bit is best for hardened steel. It has a sharp point and is able to pierce through the metal easily.

Will carbide drill hardened steel?

Yes, carbide drill-hardened steel can be used in a variety of applications.

Is cobalt or titanium drill bits better?

There is no definitive answer to this question as the two drill bits can be effective depending on the type of drilling you are doing. However, cobalt drill bits are more durable and can often be used for more severe drilling applications.

Conclusion

Choosing the right drill bit is important for any worker, especially if the drill bit is tailored to do a specific task job. By using the right bit, it will be easier for the worker to get the job done and be able to complete their tasks successfully. This will make the worker's job much easier and likely save them time.