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 5985-01-128-2757
NSN 5935-00-204-9909
NSN 7035-00-541-8516
NSN 5998-01-652-5001
NSN 6645-00-283-6794
NSN 5996-01-486-5412
NSN 5999-00-168-0356
NSN 6650-00-879-5834
NSN 5990-00-534-9798
NSN 6220-00-241-6278
NSN 5999-01-245-6970
NSN 6240-00-594-7138