
Heavy-Duty Carriage Bolts and Nuts for Secure Coach Assembly. Customized Standards: Supports DIN, ANSI, GB, JIS, BSW, GOST, and fully customized standards per drawing. Wide Material Options: Available in Carbon steel, Alloy steel, Stainless steel, Aluminium, and Copper. Diverse Surface Treatments: Offers Plain, Zinc Plated, Hot DIP Galvanizing, Dacromet, Nickel plated, and more. Multiple Grade Selections: Provides grades ranging from 4.8 to 12.9 to meet various strength requirements. OEM and ODM Services: Full customization available including logo, design, and samples with flexible options. ISO9001 Certified Quality: Quality system certified with 100% optical screening before shipment for precision. Fast Sample Delivery: Standard fasteners available immediately; customized parts ready in 15 days after mold. Global Payment Terms: Accepts T/T, L/C, D/P, PayPal, Western Union, and Made-in-China Global Pay.