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 5945-01-113-6749
NSN 5999-00-936-0112
NSN 5996-00-976-1429
NSN 5950-00-360-1963
NSN 5960-00-721-1744
NSN 5965-01-588-8239
NSN 5950-00-240-4582
NSN 5950-00-501-5776
NSN 6685-01-392-1513
NSN 6685-01-221-4605
NSN 5905-01-319-4100
NSN 5895-00-940-9144