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 5835-00-894-7374
NSN 5945-00-800-3525
NSN 6110-01-137-0063
NSN 6240-00-879-5830
NSN 6320-00-433-2773
NSN 5985-01-632-1572
NSN 5990-00-583-9920
NSN 5998-00-558-2672
NSN 5945-01-069-6020
NSN 5935-00-648-3298
NSN 6650-01-024-9554
NSN 5996-00-969-6422