Wood Construction Washer to DIN 440, Type V in A2 Stainless Steel

Timber or wood construction washers with a square hole. These washers are designed for use with bolts that include a square section on the shank below the head, such as with coach or carriage bolts. The large size of the washer and the square hole help prevent the bolt from spinning as it's tightened and will protect the surrounding area of the fixing point. Timber construction washers are generally used with softwoods and will support and add strength to the joint. The increased bearing surface of the washer will help to accommodate the movement in the wood as the timber expands and contracts with changes in humidity.