Counterboring Drill Bits | McMaster-Carr

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89 Products

Fabricating and Machining

Counterbores

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

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.)