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:1.7-31,Custom
MOQ:10000
Internal serrated lock washer (Type J) -The teeth is at the inner diameter of the washer which is use for bolt or screw tightening. 
