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 6150-01-087-0821
NSN 5965-01-069-5650
NSN 5930-01-488-1254
NSN 5835-00-987-9341
NSN 6135-01-296-1860
NSN 5910-01-492-9892
NSN 5996-01-106-2763
NSN 5925-00-262-6087
NSN 7035-01-449-1189
NSN 5990-01-504-9265
NSN 4140-01-216-8669
NSN 6130-00-776-6081