Collar with washer
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 6610-01-174-6820
NSN 6130-01-103-5128
NSN 6110-01-398-2602
NSN 6110-01-600-1223
NSN 5920-01-320-1337
NSN 5996-00-242-4272
NSN 5930-00-862-9545
NSN 5930-01-224-1794
NSN 6645-01-523-7171
NSN 6135-00-057-2005
NSN 6645-01-629-9657
NSN 5985-01-528-6857