Brand:TGR, XDM, TD Brief: Surface:HDG, plain, black, galvanized, yellow zinc, nickel plated,dacromet, etc Material:stainless steel304,316,316L,317,317L,carbon steel,etc Size:Φ2-Φ100,2#-2,Custom MOQ:10000
Helical spring lock washers are the most commonly used part to prevent assembly components from loosening. They apply greater bolt tension per unit of applied torque, and provide protection against loosening resulting from vibration and corrosion.