Countersink Tools | McMaster-Carr

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2,624 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 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

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

Drill Bits

Create holes in metal, wood, plastic, concrete, and more

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.)