
M6*21 Blue Zinc-Plated Carbon Steel Phillips/Crosss Truss Step Sem/Combination Screw Customizable Screw. Customizable Head Types: Available in Phillips, Slotted, Hex, Round, and Torx head styles. Wide Grade Range: Offered in grades 3.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, and 12.9. Diverse Surface Treatments: Options include Zinc-Plated, Nickel-Plated, Chrome-Plated, and Baking Paint. Multiple Material Options: Available in Carbon Steel, Alloy Steel, Stainless Steel, Brass, and Aluminum. Standard Compliance: Meets DIN, ANSI, ASTM, JIS, GB, ISO, and Non-Standard specifications. OEM and ODM Services: Full customization support for design and manufacturing processes. Fast Stock Delivery: Stock items can be delivered within 3-5 days after payment. NDA Protection: Customer designs are kept confidential and protected under NDA.