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 2925-00-660-8131
NSN 5945-01-225-4297
NSN 5950-01-296-4509
NSN 5935-00-291-4910
NSN 5960-00-266-6741
NSN 5996-01-318-1407
NSN 6620-01-611-5064
NSN 6150-00-751-9173
NSN 5925-01-466-9925
NSN 6150-01-370-0161
NSN 5990-01-024-9659
NSN 6685-01-245-7596