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 5965-01-600-0444
NSN 5965-01-189-4805
NSN 6110-00-647-3932
NSN 5930-01-555-5178
NSN 6610-00-025-1878
NSN 5998-01-533-4858
NSN 2925-00-911-1911
NSN 5835-01-004-1495
NSN 5920-00-839-8096
NSN 6685-01-231-9583
NSN 5915-01-113-5234
NSN 7035-01-169-6551