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 5905-00-585-5831
NSN 5975-00-014-0784
NSN 5975-01-198-5615
NSN 5990-00-689-5736
NSN 6150-01-587-9409
NSN 7035-00-281-4082
NSN 5920-00-826-0949
NSN 5935-01-395-2028
NSN 5905-00-179-2336
NSN 5920-01-157-2767
NSN 5905-01-322-4901
NSN 5999-00-698-2015