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 5855-01-542-9059
NSN 6650-01-605-9181
NSN 5910-00-584-1181
NSN 6130-00-235-1000
NSN 6130-00-232-9449
NSN 5990-01-521-7890
NSN 5905-00-396-0066
NSN 5855-01-361-9787
NSN 6320-01-203-4303
NSN 5910-01-329-0665
NSN 6240-01-089-3827
NSN 6145-00-625-0714