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 5925-01-241-8464
NSN 6130-01-330-1371
NSN 6130-00-928-9532
NSN 5998-01-068-3352
NSN 5935-00-452-7203
NSN 6105-01-074-9074
NSN 5950-01-029-9412
NSN 6620-01-354-2824
NSN 6620-01-391-7331
NSN 6135-01-297-5565
NSN 5998-00-226-2294
NSN 5985-01-196-4843