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 6105-00-224-2452
NSN 5990-01-157-0441
NSN 5905-01-446-7167
NSN 5945-00-021-6996
NSN 6135-01-246-0308
NSN 6150-01-127-4341
NSN 5996-01-295-7854
NSN 5999-01-157-9519
NSN 6320-01-299-6367
NSN 5950-01-088-1536
NSN 6110-00-853-3103
NSN 6645-00-678-0914