Description:

Flat Washers Zinc SAE - 5/16" (ID 0. 344 x OD 0. 688 x THK 0. 076) - Qty-100 Features: Flat washers are used to support and spread the load across the baring area of the bolt and nut to prevent pull through. A flat washer is a round outer diameter thin plate with a center hole (inner diameter) punched to the size of the bolt or screw size.