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 6620-01-542-8709
NSN 5960-01-570-8605
NSN 5855-01-068-3683
NSN 6240-00-419-3185
NSN 5950-01-340-9984
NSN 4140-01-126-7368
NSN 6240-00-977-5599
NSN 5965-01-049-8307
NSN 6130-00-418-4973
NSN 6240-01-644-5022
NSN 6220-01-019-7606
NSN 6685-00-081-7708