Sems Screw with washer assembly. Washer type: spring lock washer, external tooth lock washer, internal tooth lock washer, flat washer, square washer, cup washer, DIN 6904, DIN6905, wave washer, square dome washer, conical washer, special washer. Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass. Standard: IFI, JIS, ISO, DIN, BS. Size Range: M1.4-M12, #0-1/2 Length Range: 3MM-125MM, 3/16-5". New styles and customer designs are welcome.
