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 5935-01-126-1483
NSN 5945-00-420-5712
NSN 6685-01-321-2729
NSN 5990-00-851-5778
NSN 5835-01-512-4834
NSN 5895-01-507-1771
NSN 5996-01-080-7943
NSN 7035-01-571-6407
NSN 5950-01-416-5090
NSN 5925-01-442-3792
NSN 5930-01-150-3607
NSN 6320-01-275-2741