Jiaxing Yutong Technology Co., Ltd is famous Custom M1.6-M52 Square Head Bolt Manufacturers and China M1.6-M52 Square Head Bolt suppliers. Our fasteners meet the international ISO standard, the German DIN standard, the American ANSI standard, the British BS standard, Chinese GB standard etc. Fastener grades are Grade4.8, 8.8 and 10.9. Grade A B C is available too. Cover almost the entire applicable fields of equipment manufacturing and machinery manufacturing and processing industries. In addition to customized M1.6-M52 Square Head Bolt, we also produce mainstream fasteners.