
ISO 8677/DIN 603/ASME/ANSI B 18.5.2.3m/BS 4933/JIS B 1171 C45 Carbon Steel Square Neck Carriage Bolt. OEM and Customization Services: Customized designs and specifications accepted; 95% of sales are OEM orders. High Production Capacity: Up to 100,000 units manufactured daily with 3 million monthly capacity. Fast Mold Creation: New molds created in as fast as 10 days by engineers with 35 years experience. Free R&D Service: Complimentary research and development support provided for all clients. Comprehensive Quality Certifications: ISO9001:2015, CQM, IQNet certified; SGS and RoHS compliant green products. Advanced Testing Equipment: Equipped with 3D coordinate measuring machines and salt spray testing. Small Order Acceptance: Minimum order quantity is 100 pieces; small orders are welcome. 24/7 Online Support: Round-the-clock online service available for customer inquiries.