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 5910-01-115-5380
NSN 5975-00-525-2331
NSN 5996-00-186-8709
NSN 5996-01-492-5147
NSN 6685-00-244-1029
NSN 6110-01-545-5583
NSN 6320-01-578-6006
NSN 5965-01-372-3593
NSN 5895-01-465-6394
NSN 5930-01-324-1419
NSN 6650-01-566-0884
NSN 6145-00-162-7922