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 5930-01-660-3436
NSN 5855-01-527-0392
NSN 5960-01-305-1874
NSN 6645-01-296-2301
NSN 6645-00-066-6868
NSN 5998-01-321-2806
NSN 6610-01-438-8246
NSN 2925-01-337-2508
NSN 5996-01-502-6330
NSN 5835-01-440-5391
NSN 6135-01-407-0594
NSN 6105-00-349-0063