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 5985-01-575-0109
NSN 6685-01-519-9250
NSN 5965-01-411-9933
NSN 6610-00-430-5208
NSN 6130-01-423-8905
NSN 5960-00-215-5884
NSN 6110-01-483-5102
NSN 5998-00-361-2591
NSN 2925-01-415-2140
NSN 5950-01-511-2958
NSN 6240-01-424-9997
NSN 6650-00-103-0867