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 5925-00-364-7969
NSN 5915-00-374-0935
NSN 6150-00-865-5270
NSN 6240-01-648-2327
NSN 6130-01-604-9288
NSN 7035-01-596-4303
NSN 5960-00-113-9963
NSN 5960-01-444-2205
NSN 6650-01-177-0632
NSN 6105-01-177-1457
NSN 6620-01-534-2370
NSN 6620-00-054-4778