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 6650-00-254-8966
NSN 6240-00-959-7025
NSN 6150-01-552-3321
NSN 6320-00-483-0451
NSN 5975-01-472-2598
NSN 6145-01-089-9230
NSN 5965-00-119-6207
NSN 5935-00-959-5668
NSN 2925-01-359-9818
NSN 6150-01-364-0545
NSN 2925-01-290-8208
NSN 6110-01-580-0855