1/2" Countersinks | McMaster-Carr

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Carbide-Tipped Steel

High-Speed Steel

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22 Products

Fabricating and Machining

Countersinks

Cut a cone-shaped opening in a hole to install flat-head screws and rivets flush with the surface

Counterbores

Enlarge the top of a hole to install socket and hex head screws flush with the surface

Countersink Drill Bits

Countersink Drill Bits

A single bit drills and creates an angled surface so oval and flat screw heads sit flush

Counterbore Drill Bits

Counterbore Drill Bits

A single bit drills and creates a flat surface for the head of a socket head cap screw

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)