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 6145-01-202-2837
NSN 5960-00-275-7497
NSN 6145-00-442-3326
NSN 4140-01-200-3265
NSN 5975-00-587-4871
NSN 6150-01-432-1020
NSN 5950-01-590-6393
NSN 5998-01-106-4218
NSN 5835-00-479-0464
NSN 5960-00-470-2570
NSN 6110-00-993-0102
NSN 2925-00-193-2402