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 5855-01-429-8702
NSN 6220-01-308-8025
NSN 5915-00-717-7092
NSN 6685-00-842-1253
NSN 7035-01-426-4133
NSN 6645-01-046-4880
NSN 6620-01-083-4672
NSN 6150-00-288-6245
NSN 6685-00-155-4301
NSN 6650-01-654-4927
NSN 6610-01-374-9048
NSN 5950-00-186-0682