Flat Washers provide spacing and an increased bearing surface. Machine Screw Flat Washers are the smallest type of flat washer because their outside diameter (OD) is just a little more than twice their inside diameter (ID). If you need a larger OD flat washer, choose SAE or, larger still, USS. Washer size refers to its nominal hole size and is based on screw size.
Flat Washers provide spacing and an increased bearing surface. Machine Screw Flat Washers are the smallest type of flat washer because their outside diameter (OD) is just a little more than twice their inside diameter (ID). If you need a larger OD flat washer, choose SAE or, larger still, USS. Washer size refers to its nominal hole size and is based on screw size.