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 6645-01-364-7330
NSN 4140-01-519-0645
NSN 5935-01-616-9823
NSN 5950-01-604-8158
NSN 5915-01-271-5748
NSN 5975-00-693-5922
NSN 5905-01-389-3116
NSN 6105-00-974-6675
NSN 5985-01-572-0189
NSN 6620-00-193-9503
NSN 5990-01-555-6616
NSN 6150-00-888-3358