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 5998-01-248-1568
NSN 5930-01-591-5751
NSN 6610-01-016-2722
NSN 6130-01-038-9244
NSN 4140-01-532-3713
NSN 5910-01-329-7677
NSN 5930-01-395-9111
NSN 6685-01-071-3774
NSN 5975-01-607-6493
NSN 5930-01-422-2382
NSN 5905-00-929-0180
NSN 5915-01-382-8156