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 5905-00-671-4558
NSN 7035-01-265-2301
NSN 6240-01-418-1917
NSN 5910-01-573-1863
NSN 6320-00-483-0451
NSN 6135-01-397-6564
NSN 5910-01-277-0742
NSN 6150-01-560-2437
NSN 6650-00-401-1496
NSN 6240-01-257-9004
NSN 5990-00-140-4559
NSN 5930-01-592-3257