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 5915-01-610-2514
NSN 6240-00-256-6410
NSN 5996-00-470-2414
NSN 6645-01-295-4373
NSN 5950-00-345-9509
NSN 5925-00-138-5108
NSN 6130-01-522-5209
NSN 5990-00-499-9816
NSN 6240-00-866-6239
NSN 5990-01-065-0492
NSN 5950-01-014-7937
NSN 5930-00-346-2757