$18.40
FAQ’s
Q: Is the 1/8″ drill bit suitable for drilling small pilot holes?
A: Absolutely. The 1/8″ size is ideal for creating accurate pilot holes, especially in metalwork where precision is key. The 135° split point helps start the hole cleanly without slipping, even on curved or hard metal surfaces.
Q: Can the 1/8″ cobalt drill bit cut through stainless steel?
A: Yes. Our 1/8″ cobalt drill bit is made from M35 high-speed steel with 5% cobalt, designed specifically to drill through harder metals like stainless steel, tool steel, and even hardened alloys. Use with cutting paste and slow drill speeds for best results.
Drilling Stainless with Ease: I’d been having trouble drilling stainless steel, even with the “best” bits from the local hardware store. On an Internet recommendation, I tried these. With a dab of cutting paste, these drills will go through stainless the way most drills cut through soft metal, and cost much less than those I was getting from the hardware store.
Steven Eugene Raiguel
. Read more reviews here
A) Drill Diameter 1/8″
B) Overall length 2″ + 9/16″
C) Flute length 1″ + 27/64″
Point angle 135 degrees
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.
Frequently Asked Questions
Q: Is the 1/8" drill bit suitable for drilling small pilot holes?
A: Absolutely. The 1/8" size is ideal for creating accurate pilot holes, especially in metalwork where precision is key. The 135° split point helps start the hole cleanly without slipping, even on curved or hard metal surfaces.
Q: Can the 1/8" cobalt drill bit cut through stainless steel?
A: Yes. Our 1/8" cobalt drill bit is made from M35 high-speed steel with 5% cobalt, designed specifically to drill through harder metals like stainless steel, tool steel, and even hardened alloys. Use with cutting paste and slow drill speeds for best results.
Q: What’s the best drill speed for a 1/8" cobalt bit when drilling hard metals?
A: For hard metals like stainless steel, use 1000–1500 RPM on a hand drill. Always use light pressure and cooling lubricant for best results.
Q2: Can this 1/8" cobalt bit be used with a standard cordless drill?
A: Yes, it works perfectly with a variable speed cordless drill. Just make sure to apply minimal pressure and let the bit do the cutting—especially when working on tougher metals.
1/8" 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
Click here for Imperial drill bit sizes
Click here for Metric drill bit sizes
1/8" Drill Bit for Metal – A Shop Essential with Superior Durability
The 1/8" drill bit for metal offers versatile strength in stainless steel, alloy, and mild steel. Ideal for professionals and DIYers alike.
A Must-Have in Every Tool Kit
The 1/8" drill bit for metal is among the most frequently used sizes in any workshop. From structural fabricators to HVAC techs and hobbyists, this bit is relied on for accurate drilling across numerous tasks.
Use it to pre-drill holes for bolts, rivets, and fasteners. It’s also a common bit for pilot holes in stainless and alloy steel where precision and toughness are essential.
High-Grade M35 Cobalt Construction
Crafted from M35 cobalt steel, this bit withstands heat and stress better than standard high-speed steel. Its 135° split point allows quick, accurate starts without skidding—making it easier to drill by hand.
Use this bit confidently on:
Stainless steel frames
Alloy panels and bars
Automotive sheet metal
Industrial plastics and ABS
Electrical boxes and fittings
Use Cutting Paste for Better Results
Extend tool life and produce cleaner holes by applying TTP CUT-IT metal cutting paste. It helps minimize heat, which is especially helpful during extended or repetitive drilling.
Use Our RPM Calculator
Match your drilling speed to your material with our easy Speeds & Feeds Calculator. Running your 1/8" drill bit for metal at the correct RPM ensures clean, safe cuts every time.
Backed by Our Guarantee
Thousands of professionals across the USA rely on this cobalt 1/8" drill bit for metal. And with our money-back guarantee, you can test it risk-free. If you’re not impressed, we’ll refund your purchase—no questions asked.
Additional information
| Weight | 0.08 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)