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 5915-01-288-0432
NSN 5999-01-257-5976
NSN 5990-01-501-5409
NSN 7035-00-238-3662
NSN 6610-01-519-8953
NSN 6685-00-760-6694
NSN 5930-00-221-2288
NSN 7035-01-495-7134
NSN 7035-00-495-2137
NSN 2925-01-027-1293
NSN 5975-01-273-0971
NSN 5855-00-310-2740