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 6110-01-377-0508
NSN 6645-00-935-7046
NSN 5835-00-789-1454
NSN 5920-01-065-1824
NSN 5920-01-113-9040
NSN 6135-01-205-5965
NSN 5895-00-313-2446
NSN 5910-00-619-0875
NSN 5998-01-490-0609
NSN 6320-01-611-4918
NSN 6685-00-932-1322
NSN 6645-00-016-0594