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 6145-00-570-0516
NSN 5999-01-231-2488
NSN 5998-00-104-7501
NSN 6685-01-297-4367
NSN 5975-00-789-6209
NSN 6685-01-463-0554
NSN 5935-01-322-3984
NSN 6645-01-565-6973
NSN 5895-00-172-2256
NSN 5895-00-253-8138
NSN 5945-00-894-0569
NSN 6650-00-283-0978