Best Drill Bits For Cutting Steel: Top Picks 2026

This MACXCOIP M35 cobalt set is a compact kit focused on durability. The 13-piece jobber lengths cover common SAE sizes and resist heat when drilling steel. It comes in an indexed case that keeps bits organized on the bench.
For hobbyists and pros tackling stainless and hardened metal, these bits score clean starts and resist blunting. I find them reliable for repeated holes when used with moderate speed and light coolant, making them a solid choice among the best drill bits for cutting steel.

Bosch’s M42 cobalt set blends pro-grade metal with user-friendly design. The three-flat shank improves chuck grip and stops slipping during high torque drilling on steel. Sizes cover common shop needs for stainless and light alloys.
I use these for finish work where clean holes matter. They work well among the best drill bits for cutting steel because the M42 formula keeps edges sharp and tolerates heat, especially with coolant and correct speeds.

DEWALT’s 21-piece TiN coated set uses a pilot point to start clean and cut smoother in mixed materials. The titanium nitride coating extends bit life and reduces friction when drilling mild steel and common metals.
For casual metal cutting and general trades, these bits are a solid pick. I reach for them when I need consistent holes without walking. They rank among the best drill bits for cutting steel for lighter duty and mixed-material shops.

This 15-piece M35 cobalt set gives a broader size range up to 3/8″ with straight shanks for common chucks. The HSS substrate and cobalt alloy keep tips usable under heat and repeated steel cutting.
I use these when I need slightly larger holes in stainless and hardened parts. They’re straightforward, tough, and stand out among the best drill bits for cutting steel when you want a mix of sizes and solid wear resistance.

This 13-piece M35 set emphasizes a 135° split point for instant bite and reduced walking. The jobber length and cobalt blend make it a solid workhorse for steel and stainless where accuracy matters.
I pick these for pilot holes and bolts in metal frames. They perform well under steady feed and coolant and rank among the best drill bits for cutting steel for precision and dependable starts on thin and medium steel.

The Crosstar M35 set adds a TiAlN coating and a three-flute geometry for faster chip removal and long life. Sizes up to 1/2″ cover large holes in thicker steel. TiAlN boosts heat tolerance for heavy cutting.
I rely on this set for fabrication and thicker stainless work. It’s one of the best drill bits for cutting steel when longevity and chip clearance are critical. Use low-to-moderate speeds and coolant for best life.

EFFICERE’s Deming set targets large holes from 9/16″ to 1″ with reduced shanks for drill compatibility. The M2 HSS and 135° split points make them suited to wide bores in steel and heavy fabrication.
I use these for big bolt holes and structural work. They are essential when you need the best drill bits for cutting steel at large diameters; use steady feed, low RPM, and proper lubrication to keep tips sharp.

NordWolf’s stubby M35 set is built for tight spaces and quick-change work. The 1/4″ hex shank fits impact drivers for fast work on thin stainless and hard metals. Stubby length stops flex and improves control.
I reach for these in cramped engine bays and chassis work. They rank among the best drill bits for cutting steel when access is tight and control matters. Use low speed and steady pressure for best life.

DEWALT’s 14-piece set uses a three-flat shank and 135° split point to reduce walking and maintain grip. It’s designed for mixed use across wood, plastics, and light metal work including mild steel.
I suggest these when you want predictable starts and good general performance. They count among the best drill bits for cutting steel for casual metal tasks and for builders who need a versatile, reliable bit set at a fair price.

Sinyeenglon’s 99-piece M35 kit offers complete coverage for most shop needs. With many small increments and an indexed case, you get the sizes to match jobs without buying extras. M35 cobalt gives durability for stainless and hardened metals.
I recommend this massive set when you want nearly every common size at hand. It’s among the best drill bits for cutting steel for busy shops and avid hobbyists who dislike running back to the store for a missing size.