Look for detent, lock, pop and plunger pins at Grainger. Lockout and vibration-resistant metal knob plunger pins can be easily withdrawn and reengaged. Pop pins with a weld-on barrel can quickly and easily adjust height or length on many applications. Detent pins feature quick-release action to help arrest or resist spindle, axle or wheel rotation. Positive locking pins can provide a secure way to adjust or remove machine accessories. Get detent, lock, pop and plunger pins at Grainger!