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 5945-00-286-8594
NSN 6645-00-057-3499
NSN 5965-01-390-9240
NSN 5915-01-158-6864
NSN 5915-01-188-6665
NSN 6130-01-354-3370
NSN 4140-01-131-1749
NSN 7035-00-931-9415
NSN 5975-00-838-6698
NSN 5990-01-162-9220
NSN 5905-01-031-4479
NSN 5915-01-109-3798