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 5855-00-308-0474
NSN 5950-00-015-1537
NSN 5835-01-512-4834
NSN 5925-01-212-7249
NSN 5960-00-629-8773
NSN 5975-01-460-2791
NSN 5905-01-449-0369
NSN 7035-00-830-1235
NSN 5950-01-069-9400
NSN 5905-00-009-1649
NSN 6320-01-384-3850
NSN 5960-01-605-9921