Frequently Asked Questions
What materials can this cobalt drill bit cut?
Our cobalt drill bits handle stainless steel, cast iron, hardened steel, alloy steels, aluminum, copper, and more.
What speed should I use when drilling metal?
Use our Speeds & Feeds Calculator to set the correct RPM. Running too fast will overheat the bit; slower speeds preserve sharpness.
Can cobalt drill bits be resharpened?
Yes — cobalt drill bits can be resharpened, giving you long-term value.
How is cobalt different from standard HSS?
Cobalt (M35, 5%) withstands higher heat and stays sharper longer, making it ideal for harder metals compared to standard high-speed steel.
Do I need cutting paste when drilling metal?
We recommend TTP CUT-IT cutting paste for smoother drilling, cooler operation, and longer tool life.
What customers say
Average rating:
4.9 / 5 ·
Based on
154 reviews
- DIYMark (YouTube) — “TTP HARD outperformed leading US bits on tough metals.”
- Catus Maximus (YouTube) — “Impressed with the M35 cobalt set and CUT-IT paste.”
- Customer — “Clean holes in stainless; slower RPM + paste made the difference.”
Reviews reflect the TTP HARD cobalt drill bits range. Independently tested and certified for hardness by SGS Testing.
3/32" cobalt M35 metal drill bits
Drill stainless steel and harder metals easily:
- Heavy Duty Cobalt Drill Bits
- Suitable for drilling harder metals including stainless steel
- Used by professionals and home improvement enthusiasts
- Can be resharpened
- Rockwell hardness C average of 66 certification
- Money Back Guarantee
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3/32" Drill Bit for Metal – Ideal for Electrical and M2.5 Prep
The 3/32" drill bit for metal cuts cleanly in stainless and alloy steels. Great for pilot holes, control panels, and precise pre-thread tapping.
Precision and Versatility
The 3/32" drill bit for metal strikes an ideal balance between finesse and strength. It’s commonly used in electrical panel work, mounting hardware for instruments, and creating pilot holes for M2.5 tapping. Its versatile size allows for detailed work without compromising durability.
This bit’s slightly thicker profile adds stability while maintaining precision—especially valuable when drilling into thin gauge sheet metal or compact assemblies.
Heat-Toughened Cobalt Steel
Crafted from M35 cobalt, this drill bit is designed for high performance under tough conditions. It features a 118° point angle, which gives excellent control and accurate starts, particularly on flat surfaces or hand drills.
Use the 3/32" bit to drill:
Stainless steel sheets and brackets
Mild steel and galvanized metals
Brass, bronze, and copper
Plastics and electrical enclosures
Aluminum rails and supports
Extend Bit Life with Metal Cutting Paste
To maintain peak performance, use TTP CUT-IT metal cutting paste during drilling. It cools and lubricates the drill tip, helping to avoid overheating or premature dulling—especially crucial with repeated use in stainless steel.
Know Your Speed for Maximum Control
Avoid damaging your work or your tool. For best results, check the correct RPM using our Speeds & Feeds Calculator. This ensures your 3/32" drill bit for metal runs at a pace that maximizes precision and longevity.
Built for Performance, Backed by Guarantee
From electricians to precision fabricators, professionals rely on this 3/32" drill bit for metal every day. If it doesn’t exceed expectations, our money-back guarantee makes your purchase completely risk-free.
Additional information
| Weight | 0.5 lbs |
|---|
Prices : All Prices are United States (US) Dollar ($) Shipping : We ship from Michigan Warehouse across North America & Canada (Max cart weight 4.2lbs for Canada)







Point angle 118 degrees