Square Washer Plates
Square washer plates are commonly used with sq sq holding down bolts to make a foundation bolt assembly together with a waxed cardboard cone. The square hole locates in the square under the head of the bolt allowing it to sit securely and to prevent rotation when tightening. Square washer plates can also be used with standard bolts or threaded rods where a large load spreading washer is required. Available in 6mm and 10mm thickness with a variety of hole sizes.