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 5999-00-900-3342
NSN 5835-00-807-5632
NSN 6240-01-156-4692
NSN 6685-01-034-2277
NSN 6150-01-143-2508
NSN 5999-00-119-3487
NSN 5999-01-053-1135
NSN 5855-01-591-5696
NSN 6645-01-436-4542
NSN 5998-01-023-7943
NSN 6110-01-109-0114
NSN 5905-01-654-1808