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 5905-01-337-0970
NSN 5950-01-211-2719
NSN 5960-01-435-1167
NSN 6220-01-535-6968
NSN 6645-00-108-6479
NSN 6320-00-456-2092
NSN 6620-00-948-3801
NSN 5935-01-233-5083
NSN 5855-01-147-6024
NSN 5975-01-434-4909
NSN 5920-01-620-2543
NSN 5975-01-525-2017