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 6135-01-561-5945
NSN 5920-01-344-9803
NSN 7035-01-385-3628
NSN 6610-00-897-3242
NSN 6130-01-412-4794
NSN 6220-00-705-5254
NSN 5920-00-907-2264
NSN 6135-01-560-8130
NSN 6240-01-050-7537
NSN 5855-01-542-9059
NSN 7035-00-300-3208
NSN 5915-01-090-1057