Glavanized Round Head Square Neck Carriage Bolt Grade DIN603

We are constantly improving the efficiency of our work in order to respond more quickly to changes in customer demand for our locking lug nuts, concrete wall anchors, thumb screws. We focus on the overall progress of the company, hoping to optimize the system and mechanism, grow the talent team, and improve the quality of operation. At the same time, with a good service system, the enterprise has done the pre-sale and after-sale service work steadily, so that customers can rest assured and be free from worry. We firmly believe that quality lays the foundation and integrity creates the future. We are willing to work with you to create a better future. Our company has expanded its business scale by constantly introducing talents, absorbing advanced production technology and management experience at home and abroad.

Shanghai Jinrui Norm Parts Supplies Co.,Ltd is one of the leading gb carriage bolt manufacturers and suppliers in China, welcome to buy gb carriage bolts, gb standard carriage bolt from our factory and company.

This standard of the GB carriage bolt stipulates the thread size from M5-M20. As the aquare neck,the depth of square shall be measured,parallel to th axis of bolt at the midpoint of the flats   of square,from the bottom of square to the bearing surface for bolts having flat bearing surface type heads,and to the intersectio of flats of square with the conical bearing surface for bolts having countersunk head.The corners of square neck may be rounded to the extent specified in the respective dimensional tables and need not be filled out for the total depth of square.

Our Glavanized Round Head Square Neck Carriage Bolt Grade DIN603 is novel and fashionable in design, high in quality and durable so that it has been sold all over the world and greatly welcomed by the local market. We're introduced as a one of the growing manufacture supplier and export of our merchandise. Together with our efforts, our products and solutions have won the trust of clients and been very salable each here and abroad.