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 5855-00-089-3974
NSN 6220-01-435-5956
NSN 6130-00-194-7548
NSN 6685-01-199-5911
NSN 5895-00-116-4392
NSN 5905-01-378-7061
NSN 5990-00-258-0228
NSN 6685-01-650-4531
NSN 5895-01-193-4290
NSN 5895-01-111-5403
NSN 6110-01-378-0724
NSN 6150-01-616-0593