Countersink Tools | McMaster-Carr

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2,655 Products

Fabricating and Machining

Countersinks

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

Countersink Heads

Countersink Heads

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

Countersink Extensions

Countersink Extensions

Lengthen the reach of threaded-shank countersinks

Counterbores

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

Center Drills

Drill cone-shaped openings in workpieces to mount them between centers on your lathe

Countersunk Hole Repair Tools

Countersunk Hole Repair Tools

Lightly shear off material to repair and clean out holes for machining between centers

Deburring Tools

Deburring Tools

Changeable or fixed cutting blades shave rough edges from surfaces, holes, and pipe

Burs

Cut excess material to smooth surfaces and holes using a rotary power tool like a die grinder

Countersink Drill Bits

Countersink Drill Bits

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

Drill/Screwdriver Bits

Drill/Screwdriver Bits

Quickly change between drilling countersunk holes and driving screws

Counterbore Drill Bits

Counterbore Drill Bits

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

Measuring and Inspecting

Countersink Gauges

Countersink Gauges

Catch sizing errors in countersunk holes to keep fasteners from protruding and creating weak points

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