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 6240-01-394-1811
NSN 5965-01-250-3214
NSN 6105-01-477-5508
NSN 6610-01-463-8866
NSN 5930-00-899-0696
NSN 5920-01-158-4517
NSN 6685-00-834-2304
NSN 5910-00-102-0258
NSN 5998-01-116-6968
NSN 5935-01-354-4075
NSN 6240-00-105-0584
NSN 5945-01-454-9825