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 6240-01-233-8382
NSN 5935-01-246-4259
NSN 5935-00-110-1588
NSN 5998-01-266-7696
NSN 5996-01-120-8348
NSN 6645-01-201-5802
NSN 5895-00-237-6048
NSN 6240-00-197-6819
NSN 6220-00-276-8681
NSN 5895-00-918-0233
NSN 5950-00-350-2825
NSN 5910-01-596-4412