Mil. Spec. Pins | McMaster-Carr

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Lock Type Lock Type

Push/Pull Handle

	For Hole Diameter For Hole Diameter

	Handle Material Handle Material

Stainless Steel

	Spring Material Spring Material

Stainless Steel

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284 Products

Fasteners

Dowel Pins

Use these metal dowel pins as pivots, hinges, shafts, jigs, and fixtures to locate or hold parts.

Undersized Dowel Pins

Slip these pins in and out during maintenance or prototyping—they’re undersized to make alignment easier.

Ring-Grip Locking Push-Pull Quick-Release Pins

Also known as double-acting pins, these pins lock in place until you push the button or pull the ring to release the spring-loaded retaining balls. The smooth ring handle won't catch on parts.

T-Handle Locking Push-Pull Quick-Release Pins

Also known as double-acting pins, these pins lock in place until you push or pull the handle to release the spring-loaded retaining balls. The T-handle is easy to grip.

Cotter Pins

Also known as split pins, these have one prong slightly longer than the other so they’re easy to open. Bend prongs outward to secure.

Slotted Spring Pins

Also known as roll, tension, split, and expansion pins, these pins have a slot along one side that you squeeze closed to install them into unthreaded holes.

Machine Key Stock

Cut this stock to length to create the machine key you need. Straight keys, with a square or rectangular cross section, are the most common type of key. Install in a keyway to transmit torque from shafts to gears and other components.