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 5920-01-196-0933
NSN 6150-00-666-3635
NSN 5915-01-557-9524
NSN 6650-00-021-9555
NSN 5975-01-444-3424
NSN 5905-00-755-1186
NSN 5975-01-413-7079
NSN 6150-01-071-4677
NSN 5996-01-650-3119
NSN 5990-01-465-9235
NSN 6620-01-203-3526
NSN 4140-00-920-6393