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 5925-00-710-1664
NSN 5935-00-765-3299
NSN 6130-01-289-0824
NSN 6150-01-571-7980
NSN 5975-00-104-5399
NSN 5905-00-965-9859
NSN 5935-00-495-0426
NSN 5905-01-640-8735
NSN 6645-00-530-3468
NSN 6145-00-234-5002
NSN 5985-01-012-4054
NSN 5985-00-435-2759