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 5935-00-815-4722
NSN 6130-00-289-7050
NSN 5835-01-100-3265
NSN 5950-01-350-7615
NSN 6150-01-247-0716
NSN 5915-01-558-6597
NSN 6610-00-611-8635
NSN 6240-00-155-8714
NSN 6105-01-209-9153
NSN 5930-01-418-0545
NSN 5910-01-551-1473
NSN 6645-01-463-3441