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 2925-01-535-7235
NSN 5915-01-503-6985
NSN 6130-00-946-6059
NSN 5945-01-154-6802
NSN 5945-00-557-3656
NSN 5895-01-509-9151
NSN 6105-01-381-7242
NSN 6135-01-153-8027
NSN 5960-01-100-5065
NSN 5915-01-442-2934
NSN 7035-00-155-9513
NSN 5925-01-090-9631