Carriage bolts, DIN603, grade 4.8

Jinglefast industrial Co., Ltd is the merger of dayang fastener factory and jinggong standard parts factory. It is a ISO9001 professional fastener manufacturer of the standard inch and metric products. The main production line is hex bolt, carriage bolt, hex lag screw, thread rods and hex nuts with stamping products flat washer and spring lock washer. 100% of the products are exported to the global market such as south and north America, Europe, Africa and Middle East countries.