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 stub drill bit with split point tip

Drill America

Drill America 27/32in Cobalt Stub Drill Bit 135° Split Point

SKU CH-BJN3-646QC

Cobalt stub drill bit with 135° split point for self-centering drilling in iron and steel

  • Product typeDrill Accessories
  • Self-centering 135° split point reduces thrust
  • Cobalt construction handles iron and steel families
  • Short rugged design fits limited spindle clearance
  • Built to Aerospace Standard 907 for reliability
  • Suitable for portable or machine drilling operations

27/32in Cobalt Stub Drill Bit

This cobalt stub drill bit meets Aerospace Standard 907 for demanding metalworking tasks. The 135 degree split point is self-centering and reduces thrust during drilling. It suits portable or machine drilling in iron and steel families. Automotive and construction professionals often choose it where spindle clearance is limited.

Installation ease and common issues

The short, rugged construction fits tight setups such as screw machine configurations. No special tooling is required beyond a standard chuck that accepts the shank. The split point helps prevent walking on hard surfaces. Users must observe California Proposition 65 warnings for cobalt content.

Capacity and headroom

Designed for a broad range of ferrous materials in maintenance and production environments. The stub length provides rigidity but limits reach compared with jobber-length bits. Sizes larger than 1/2in switch to a 118 degree standard point per the specification. It is not intended for non-ferrous or composite materials.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $56.99
Pricier than about 71% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameDrill America
Product typeDrill Accessories

Questions about this item

How do I confirm the 135° split point is self-centering after setup?

The 135 degree split point is self-centering and reduces thrust, so the bit should start on centre without walking when you begin drilling.

What comes in the box and what must I buy separately?

The box contains the single 27/32in cobalt stub drill bit; no additional accessories or holders are included.

Which version should I choose — the 135° split point or the 118° standard point?

Sizes smaller than 1/16in and larger than 1/2in use the 118 degree standard point; this 27/32in bit is supplied with the 135 degree split point.

More in Bits, Hole Saws & Accessory Kits

Similar items