We specialize in manufacturing and supplying high-quality DIN603 carriage bolt round head square neck products. Our bolts are made using premium-grade materials and advanced production technologies to ensure superior strength, reliability, and durability. With their square neck and round head design, these bolts offer a secure and stable connection for a wide range of applications, from construction and automotive to furniture and more. As a factory, we take pride in our strict quality control measures, which ensure that every bolt meets the highest standards of performance and safety. Whether you need large quantities of standard sizes or customized lengths and finishes, we can accommodate your requirements and deliver on-time and within-budget. Trust us for all your fastening needs.