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 5835-00-902-8680
NSN 6685-00-202-5233
NSN 6685-01-298-6859
NSN 7035-01-128-7431
NSN 6685-01-151-7106
NSN 6150-00-518-4558
NSN 5990-00-404-9567
NSN 6110-00-191-9225
NSN 5990-01-623-0082
NSN 6645-01-137-6048
NSN 7035-00-803-3056
NSN 5996-00-100-1238