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 6150-00-468-1885
NSN 6150-01-474-5199
NSN 6150-01-382-9691
NSN 6240-00-689-8504
NSN 4140-01-359-7829
NSN 6610-00-574-6198
NSN 5985-00-796-4115
NSN 5990-01-459-5482
NSN 6135-01-297-5565
NSN 5910-01-464-7859
NSN 6645-01-535-7136
NSN 5960-01-389-0629