We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver cylindrical cobalt drill bit with flat-bottom parabolic flute and 118-degree tip, 3-1/8 inches long

ARTU USA INC

ARTU USA INC 5/32 In. Cobalt Drill Bit 01012

SKU CH-J0Y5-5F5HS

Cobalt drill bit drills hardened steel, tile, concrete and wood without a centre punch, withstanding heat up to 2000 F and conforming to ANSI standards

  • TypeDrill Accessories
  • MaterialCobalt
  • Drills hardened steel and ceramic tile without a center punch
  • Cobalt tip withstands heat up to 2000 F for long life
  • Flat-bottom parabolic flute removes waste faster for smoother drilling
  • Chrome vanadium shank adds strength and flexibility under load
  • Conforms to ANSI standards for reliable professional performance

5/32 Inch Cobalt Drill Bit 01012

The ARTU USA INC 5/32 inch cobalt drill bit is designed for rotary or percussion drilling across a wide range of materials. It suits tradespeople and DIY users who need a single bit for hardened steel, ceramic tile, masonry, glass, wood and plastics. The 118 degree tip angle and negative back grinding allow the tip to start without a centre punch and bore with a filing action.

Heat resistance up to 2000 F

The cobalt and tungsten carbide tip is engineered for maximum hardness and wear resistance at temperatures up to 2000 F. This construction reduces heat buildup during prolonged drilling in tough substrates such as stainless steel, granite or cast metal. The flat bottom parabolic flute clears waste quickly, helping to maintain cutting efficiency and lower friction.

Resharpenable tip extends service life

The tip can be resharpened on a silicon carbide grinding wheel, restoring cutting performance without replacing the bit. A chrome vanadium steel shank provides strength and flexibility under torque, while the bit conforms to ANSI standards for dimensional accuracy. These features reduce downtime and replacement cost on repetitive jobs.

Highlights

  • Drills hardened steel and ceramic tile without a center punch
  • Cobalt tip withstands heat up to 2000 F for long life
  • Flat-bottom parabolic flute removes waste faster for smoother drilling
  • Chrome vanadium shank adds strength and flexibility under load
  • Conforms to ANSI standards for reliable professional performance

Specifications

TypeDrill Accessories
MaterialCobalt

Questions about this item

How do I install the 5/32 In. cobalt bit so it doesn't walk on hard surfaces?

Chuck the 5/32 In. shank securely in a rotary or percussion drill; the negative back grinding on the 118 Degree tip eliminates walking, so no centre punch is needed before drilling.

When will this cobalt bit need resharpening or replacement?

The cobalt and tungsten carbide tip is resharpenable on a silicon carbide grinding wheel; resharpen when cutting edges dull from heat up to 2000 F or heavy use in hardened steel, tile or masonry.

What limit appears first during sustained drilling in concrete or steel?

Heat buildup toward the 2000 F rating is the first limit; the parabolic flute speeds waste removal, but continuous high-speed work will eventually soften the tip and reduce cutting efficiency.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.