A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 5915-01-263-3448
NSN 5960-00-553-5792
NSN 5915-01-253-3273
NSN 5835-00-155-1379
NSN 6320-01-148-8125
NSN 5998-00-862-6396
NSN 5999-01-147-5684
NSN 6130-00-538-9798
NSN 6645-00-052-7288
NSN 6150-01-315-0071
NSN 2925-01-426-3410
NSN 6145-01-294-2303