DIN 603 Cold Forged Carbon Steel Square Neck Carriage Bolts

Anti-Rotation Fastener for Construction & Machinery. Standard: DIN 603 (Square Neck Carriage Bolts). Material: Cold Forged Carbon Steel (Grades 4.8-12.9). Design: Square neck prevents spinning during tightening. Finish: Zinc Plated, Black Oxide, Galvanized for corrosion protection. Offer: Factory Direct wholesale pricing. Custom lengths up to 350mm available. 💡 Need Non-Standard Sizes? We Are OEM Factory! We specialize in customizing carriage bolts based on your Drawings or Samples. Custom Material: Stainless Steel / Brass / Aluminum Alloy. Custom Size: Non-standard length, thread, or head styles. Action: Click the button below to upload your drawing for a free quote.