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 6610-01-364-0294
NSN 5835-01-589-4735
NSN 6110-00-157-1699
NSN 6135-00-016-0071
NSN 5960-00-840-7103
NSN 6105-01-084-8707
NSN 5935-00-559-4023
NSN 5915-01-411-0233
NSN 5910-01-473-7677
NSN 5910-01-487-6757
NSN 6110-01-423-8273
NSN 6110-00-539-0422