Use as a loosening washer when tightening bolts, small screws, and nuts. Set of 2 washers with a wedge. When tightened, the ribs eject into the others material or bolt, and the loosening of bolts and nuts is absorbed with the effect of wedge. As the loosening force is activated, the tightening force is temporarily increased. Can be reused. Material is iron and is delta protected. [Caution] *Product image is just an example. Please note that the shape may vary slightly.
The product image is an example. Please note that the shape may vary slightly