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 6135-00-223-9563
NSN 6610-01-094-4524
NSN 6685-01-420-9611
NSN 6130-01-352-5644
NSN 6135-00-100-8890
NSN 6150-00-740-8011
NSN 5930-00-168-9218
NSN 5920-01-396-0124
NSN 5930-00-539-6640
NSN 6220-00-917-0881
NSN 5999-00-081-9168
NSN 5996-00-010-8112