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 5999-00-916-7992
NSN 6610-01-030-5491
NSN 5925-00-262-5651
NSN 6240-00-299-9819
NSN 4140-01-243-0608
NSN 5905-01-255-8123
NSN 6150-00-018-8646
NSN 5975-01-355-7143
NSN 6645-00-079-1430
NSN 6685-01-066-2901
NSN 6650-01-032-1786
NSN 2925-01-387-0870