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 6145-00-827-4958
NSN 5905-00-905-3335
NSN 6610-01-426-5090
NSN 5975-01-254-7000
NSN 6620-01-361-6460
NSN 5920-01-119-8382
NSN 6610-00-736-9117
NSN 6145-00-104-7789
NSN 6130-00-727-2456
NSN 5990-00-553-6716
NSN 5960-00-791-5874
NSN 6105-01-475-8569