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 4140-00-451-6132
NSN 5935-00-045-3378
NSN 4140-01-407-0437
NSN 2925-01-218-5556
NSN 5965-00-378-3403
NSN 2925-01-499-3852
NSN 7035-00-075-6776
NSN 6105-00-189-7130
NSN 5855-00-832-9341
NSN 5915-00-348-2624
NSN 5930-00-248-6608
NSN 4140-01-524-8106