Washer form types refer to the outside diameter and thickness of these flat washers.
BS4320 washer forms E and F are known as ‘black’ (uncoated) mild steel washers, although they can be supplied in a range of materials, with or without a protective coating.
Form E: Larger diameter then forms A-D, normal thickness
Form F: Larger diameter than form E, normal thickness
Available from stock with specials made to order.
We also supply washer forms A B C and D.
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