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 5835-01-008-8887
NSN 5935-01-512-6239
NSN 7035-01-296-4737
NSN 6650-01-302-9695
NSN 5920-00-180-4278
NSN 6130-01-569-6056
NSN 6220-01-273-0934
NSN 6620-00-967-3662
NSN 5895-01-629-9218
NSN 5965-00-234-7338
NSN 6130-01-167-8036
NSN 5985-01-608-4831