
Factory Custom DIN314 DIN315 Wing Lock Nuts M4-M24 Carbon Steel Zinc Galvanized Formwork Anchor Butterfly Wing Nuts. 30+ Years OEM/ODM Experience: Over three decades of customized and OEM/ODM manufacturing expertise. Customized Support Available: Support for custom material, size, grade, surface, head, driver, logo, and package. Wide Material Selection: Carbon Steel, Stainless Steel, Nylon, Alloy Steel, Brass, Copper, and Tin Bronze. Multiple Grade Options: Available in grades 4, 6, 8, 4.8, 6.8, 8.8, 10.9, 12.9, A2-50, A2-70, A4-70, A4-80. Comprehensive Surface Treatment: Zinc Plated (white/blue/yellow), Plain, Greenkote Coating, and Powder Zinc Infiltration. Global Standard Compliance: Meets DIN, ANSI/ASTM, IFI, BS, GB, ISO, JIS, BA, and GOST standards. ISO9001 and TUV Certified: Quality assured with ISO9001 and TUV certificates for all products. Small Order Acceptance: Minimum Order Quantity is 1 Pc; small orders are welcome.