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 5905-00-243-2102
NSN 5910-00-924-8634
NSN 5895-00-503-1649
NSN 6685-01-502-9028
NSN 5935-01-222-3739
NSN 6620-01-046-3648
NSN 5975-00-958-9713
NSN 6320-01-239-7647
NSN 5930-01-262-8418
NSN 5905-00-127-4889
NSN 6130-01-544-1159
NSN 5905-01-228-0542