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 5998-01-627-3916
NSN 5998-01-561-4614
NSN 5985-01-211-6549
NSN 5990-00-811-9780
NSN 5965-01-371-1297
NSN 5910-00-431-3138
NSN 5930-01-529-6826
NSN 5990-01-324-1204
NSN 6130-01-541-5836
NSN 5835-01-502-9228
NSN 2925-01-448-2880
NSN 5935-01-056-7315