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 6150-00-230-6919
NSN 5915-01-204-7322
NSN 6135-01-431-6801
NSN 5990-00-107-7161
NSN 5910-01-209-0636
NSN 6650-00-520-2716
NSN 5965-01-284-0124
NSN 5910-00-099-9998
NSN 2925-01-416-6927
NSN 6320-01-578-6006
NSN 5935-00-209-6774
NSN 5935-01-160-0148