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 5855-01-364-1005
NSN 5998-00-486-6224
NSN 6220-01-445-6575
NSN 5930-01-605-0162
NSN 6105-00-852-8197
NSN 5835-00-074-3700
NSN 5920-01-029-4538
NSN 6145-01-357-1096
NSN 5835-01-463-2334
NSN 6135-01-361-9297
NSN 6105-00-942-2297
NSN 5985-01-587-3519