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 5905-01-633-4600
NSN 6145-01-413-9674
NSN 6220-00-878-7301
NSN 5985-01-291-8048
NSN 5920-00-189-0858
NSN 5960-01-017-0989
NSN 5925-00-903-2166
NSN 5975-01-175-3168
NSN 5999-01-006-4616
NSN 5975-00-905-0951
NSN 5950-01-207-2278
NSN 5950-01-180-6016