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 5996-01-105-4842
NSN 5950-00-258-4445
NSN 6645-01-026-6659
NSN 5996-01-067-3700
NSN 6105-01-512-2339
NSN 6610-01-607-4525
NSN 6105-01-146-4420
NSN 6610-01-038-2122
NSN 5930-01-522-0957
NSN 6685-01-276-3027
NSN 5855-01-169-9228
NSN 5999-01-413-6352