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 6320-01-501-7935
NSN 6150-01-363-1307
NSN 7035-01-100-2796
NSN 6320-00-977-3930
NSN 6645-00-376-4829
NSN 7035-01-552-5836
NSN 7035-00-760-5479
NSN 5910-00-003-4838
NSN 6130-00-954-6479
NSN 5855-01-250-2421
NSN 6105-01-317-7042
NSN 6645-00-704-3630