These are in built assembly screws & fasteners, where the spring washer & plain washers are offered in Pre -assembled form. They are intended to be offered to reduce the work force work hours at the customers end. These are available in Mild steel...
These are socket head cap screws , available in mild steel High Tensile steel & stainless steel. SS grade screws are available as per customer demands in SS 204, 304& 316.. Subject to MOQ....