M8*120 countersunk head long screw customized

This year, we received a customer from Turkey who asked for an M8 * 120 long screw with stainless steel black surface treatment and 10000pcs. He only knew the thread diameter and the full length of the screw, and let us recommend other sizes.

Stainless steel to do surface treatment there are three methods: one is in the stainless steel screw surface to do environmental protection black zinc, but because zinc and stainless steel adhesion is not strong, in the use of the phenomenon is easy to appear white; One is electrophoretic treatment. Electrophoretic treatment on the surface of screws is mainly for quality. The surface effect is good, but the price is expensive. One is dacro black treatment, relative to electrophoresis, the price of dacro will be cheaper, the surface treatment effect is better than the plating of environmental protection black zinc.

Different countersunk head screw head Angle of different, the diameter of the head is different, such as one is 90°, one is 120°, the two Angle production of the head diameter is different, the price is also different. And this countersunk head screw is half thread, if you do not know the length of the half thread, the diameter of the rod (the rod has a big rod and a small rod), then the weight of the screw calculated is very different, the price is different. And the customer is advised to measure their own products to determine the size of these places.

After speaking to the customer, the customer expressed his understanding and would soon determine the size and inform us.

When we do not know the size of the long screw, we can send the product you need to assemble the screw to the screw manufacturer. They can measure the size according to your product and design the head shape and size according to your needs. It is a customized screw for you. Shi Shi Tong screws can be customized according to the needs of customers and give reasonable Suggestions and design schemes.

Skype: kalyn qin M: +86 18124507113 Tel: +86 0755-85296744 annie@szsst88.com Add: No. 11, Dinghou Road, Dongfang Community, Songgang Street, Baoan District, Shenzhen, Guangdong, China