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 5965-01-567-9757
NSN 6130-01-336-7251
NSN 5910-01-326-9598
NSN 6150-00-179-8313
NSN 5935-01-499-2763
NSN 5935-00-724-9407
NSN 6685-00-233-0736
NSN 5920-01-564-4873
NSN 5999-01-168-6546
NSN 6220-01-620-7559
NSN 6110-01-019-0811
NSN 2925-01-424-0235