Stainless steel SUS304/SUS316 US and Inch threads are measured in inches. The cusp Angle of American thread is also 60 degrees, while that of English thread is 55 degrees. The metric thread is in MM (MM) and its cusp Angle is 60 degrees.

Because the unit of measurement is different, the representation method of various threads is not the same. For example, M8- 1.25x50 represents metric threads. The nominal diameter of the screw is 8MM, the pitch is 1.25mm, and the length is 50MM. For example, 1/4 -- 20X1" represents the inch thread. The nominal diameter of the screw is 1/4 inch (one inch = 25.4mm), and there are 20 teeth in one inch, and the length is 1 inch. In addition, when it comes to American screws, UNC and UNF are usually added to the end of British screws to distinguish between American coarse teeth and American fine teeth.

Stainless steel SUS304/SUS316 inch system due to the different standards, produced different plastic head screws. Therefore, before ordering plastic head screws, first determine which specifications of screws or nuts to use, so that they can be used with the same screws or nuts. If you still can't determine before the purchase, if there is thread gauge, use thread gauge, no tools can only use channels, such as: go to the nearest hardware store to buy screws or nuts matching, see if it can be twisted in and out.

After confirming the customer's use of British screws and American screws, our company will choose screws matching the mold according to the tooth diameter and pitch, adjust the mold according to the ordered length, select plastic materials and match colors to produce the products ordered by the customer.