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 5935-00-964-7209
NSN 6145-00-388-9084
NSN 6620-01-576-7723
NSN 2925-01-018-1348
NSN 5990-01-094-7740
NSN 5905-01-359-3273
NSN 5895-01-082-1211
NSN 6220-00-364-1605
NSN 6135-01-324-7718
NSN 5935-01-037-8878
NSN 7035-00-116-1900
NSN 6620-00-561-9380