คุณลักษณะ

• Use a set of 2 washers with a wedge shape on the inside and a radial rib on the outside.
• When tightened, the ribs bite into the mating member and bolt, and loosening of the bolt and nut is absorbed by the effect of the wedge.
• When the loosening force works, the tightening force increases temporarily.
• It can also be reused.
• Material is carbon steel and delta protect processed product.
• Used as a loosening washer when fastening with bolts, machine screws, nuts, etc.
• (Caution) Do not use spring washer and flat washer together.
• It is limited to iron and stainless steel as the partner material.
• Cannot be used for wood.
• Cannot be used for left hand screws.
• After fastening, the grip of the washer remains on the mating material.