Round Pins | McMaster-Carr

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System of Measurement

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Material

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Unthreaded Through Hole

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Specifications Met

Shank Diameter

DFARS Specialty Metals

Compliant

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Locating Pin Head Type

Hardness

Rockwell C48 to Rockwell C55

Rockwell C50

Rockwell C50 to Rockwell C62

Rockwell C52

RoHS

Compliant

Compliant with Exemptions

REACH

Steel Grade

Export Control Classification Number (ECCN)

1C998

2B999

EAR99

Double Shear Breaking Strength

Passivation

Shape

4,536 Products

Fabricating and Machining

Locating Pins

Install in fixturing plates or tables to position and secure workpieces

209 products

Locating and Support Buttons

Secure and position workpieces and fixtures from the bottom or side

168 products

Spring Locating Pins

Apply side force to workpieces to clamp them in place

59 products

Spring Locating Pin Installation Tools

Hold spring locating pins in place for installation

6 products

Slotted Bushings

Pair with a standard bushing to prevent alignment pins from binding in your fixture

34 products

Fixture Kits

Everything needed to mount workpieces of different sizes to your machine table

2 products

Index Plungers

Align parts that have mating bushings for more precision than standard spring plungers

6 products

Spring Stops

Push back against workpieces to hold them in place against stops and rails

12 products

Fixture Clamps

Secure your workpiece to a fixture table so it won't move during machining

33 products

Alignment Locks

Precisely align your mold halves

10 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

Dowel Pin Stock

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

53 products

Weld Pins

Weld in place for greater rigidity and strength than other pins

28 products

Shear Pins

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

60 products

Measuring and Inspecting

Coordinate Measuring Machine Plates and Fixtures

Raise workpieces and position them on a fixture plate

126 products

Threaded Hole Location Gauges

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

70 products

Alignment Pins

Line up holes in sheet metal, I-beams, and angle irons for bolting, riveting, and welding

148 products

Pipe Flange Aligners

Line up flange holes so they bolt securely and connections won’t leak

21 products