Best Bits For Drilling Stainless Steel: Top Picks 2026

This Bosch M42 cobalt 14-piece set is built for hard metals. The bits have M42 cobalt for heat resistance. The three-flat shank fits quick-change chucks and reduces slip. I find them steady in stainless steel and cast iron.
The kit comes in a sturdy case and covers common sizes. These bits are among the best bits for drilling stainless steel for home and shop use. They cut clean holes and resist wear when used with proper speed and coolant.

Crosstar M35 cobalt bits add TiAlN coating for extra heat and wear resistance. The three-flute design clears chips faster. Sizes span 1/16″ to 1/2″, so you have options for many jobs.
I find this set among the best bits for drilling stainless steel when you need longer life under higher speeds. Use coolant and moderate feed to keep edges sharp and holes clean in stainless steel.

This 15-piece M35 HSS twist set offers a straight shank and jobber length for reach. The M35 cobalt content helps resist heat. The case keeps bits ordered and ready.
I call it one of the best bits for drilling stainless steel for hobbyists who need solid performance without a huge price. Use slow speed and steady pressure for clean holes in stainless panels and brackets.

STROTON provides 13 M35 HSS twist bits for hard metals. The set is compact and suits tight jobs. Each bit resists heat better than plain HSS.
I place it among the best bits for drilling stainless steel for light workshops and renovation tasks. Use slow speed, firm clamps, and occasional lubricant for best results in stainless and cast iron.

NordWolf offers a 5-piece stubby M35 cobalt set with 1/4″ hex shanks. The short length reduces flex in tight spaces. It fits quick-change chucks and impact drivers for fast work.
I recommend these as the best bits for drilling stainless steel in cramped areas and on handheld drivers. They give control and lower breakage risk when drilling small holes in stainless plate or tubing.

MACXCOIP 13-piece M35 jobber bits combine toughness and reach. The index case keeps sizes organized. Bits perform well on stainless, cast iron, and steel.
I list them among the best bits for drilling stainless steel for medium-use shops that want good life and reach. Use steady pressure and coolant to keep the bits cool and sharp when drilling stainless plates.

Sinyeenglon’s 99-piece M35 set gives almost every size you may need. The jobber-length bits and index case make it easy to pick the right drill. The M35 blend helps resist heat and wear.
I consider this one of the best bits for drilling stainless steel when you need variety. For projects with many holes and size changes, this kit saves time. Use coolant and slow speed to protect bit life on stainless.

toolant’s 21-piece pro set pairs M35 with TiAlN coating and a bullet point tip. The coating reduces friction and heat. The kit supports high-speed drilling with better life.
I rate it among the best bits for drilling stainless steel for pro shops that need fast cycles and long life. The TiAlN layer keeps edges sharp longer, so fewer bit changes are needed during runs in stainless materials.

Neiko’s 3-piece spiral step bit kit gives 31 step sizes for fast hole size changes. The spiral grooves help cut thin stainless sheet and sheet metal. These bits reduce the need for many round drills.
I include them in options for the best bits for drilling stainless steel when working with thin gauges. They make progressive hole sizing smooth and save time on metal panels and HVAC fittings.

This metric M42 19-piece set uses 8% cobalt for high heat resistance. Sizes range from 1mm to 10mm, ideal for metric projects. The bits deliver clean holes when used with proper feeds.
I favor them among the best bits for drilling stainless steel for precise metric work. The M42 formula helps when drilling thicker stainless or higher alloy grades. Use moderate speed and coolant for best hole quality.