Collar color blue
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 6620-00-408-5478
NSN 5930-01-106-1525
NSN 2925-01-236-3547
NSN 6610-00-780-4696
NSN 6650-01-391-7527
NSN 5855-00-466-2309
NSN 5999-01-220-1929
NSN 5835-01-383-1313
NSN 5950-01-065-0858
NSN 4140-01-382-3864
NSN 5895-01-225-5668
NSN 4140-01-366-1983