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 5910-00-230-1778
NSN 5965-01-233-8607
NSN 5996-00-361-9901
NSN 6240-00-635-9953
NSN 5945-01-466-3120
NSN 6220-01-474-5989
NSN 5905-01-058-2110
NSN 5895-01-577-0420
NSN 5965-01-494-9446
NSN 4140-00-480-8190
NSN 6610-01-487-7256
NSN 5985-01-137-7872