Precision Pins | McMaster-Carr

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Head Diameter

Surface Smoothness, RMS

7,424 Products

Fastening and Joining

Dowel Pins

Align parts before assembly or use as a pivot, shaft, or hinge to join moving components

3,502 products

Clevis Pins

Secure parts in place and lock with a cotter pin or retaining ring

28 products

Captive Pins

Press into holes in thin materials like panels and circuit boards to permanently join or align them

84 products

Taper Pins

Fit snugly into tapered holes to secure, position, and align components

667 products

Dowel Pin Stock

Cut to the length you need for positioning and holding parts in place

53 products

Shear Pins

Use with shear hubs to break at a specific torque and safeguard machinery from overloads

58 products

Weld Pins

Weld in place for greater rigidity and strength than other pins

28 products

Fabricating and Machining

Core Pins

Add to molds and pour in plastic to form holes in finished parts

1,274 products

Ejector Pins

Push finished parts out of molds

361 products

Ejector Sleeves

Use with mold pins to form holes, bosses, and other features in parts

39 products

Ejector Blades

Flat end pushes thin-walled parts out of molds better than ejector pins

106 products

Punch Pins

Use with press dies to punch 1/8" and larger holes; modify to fit your application

30 products

Die Bushings

Guide pins and punches in molds and stamping dies or reduce friction between ejector pins and plates

102 products

Measuring and Inspecting

Plug Gauges

Verify the diameter or threads of machined holes in finished parts; also called pin gauges

1,022 products

Threaded Hole Location Gauges

Pinpoint the true center of threaded holes to precisely align and measure parts

70 products