Shenzhen Shi Shi Tong Metal Products Co., Ltd

Ms. Yang from Shenzhen Longhua ordered a  metric torx flat head screws  with a length of 320mm and a strength requirement of 8.8 for carbon steel. Before ordering from us, Ms. Yang also purchased metric  metric torx flat head screws  with a length of 320mm from other screw manufacturers. The strength is also required to be 8.8. However, the screws that were bought were easily broken when used, and the head and the lever were partially opened, and there was no way to use them. Later, Ms. Yang found us by searching for long screw manufacturers on the Internet. Seeing that our factory is not far from her, come to our factory to see if we have a solution to this problem. On the day when Ms. Yang came, our mold-cutting machine is producing a 220mm long stainless steel screw. Ms. Yang watched our production process on site and tested the carbon steel 8.8-class cup head hexagon socket 300mm that we produced before. Long screws can be used without breaking or breaking. ...

Household appliances used at home have a lot of screws on them for fastening. Generally, the screws on the top are made according to the standard for replacement. When a certain part of the appliance is loosened, it is found that the  torx flat head screws  is broken and cannot be tightened. After inquiring about the customer’s use of this screw on the electrical appliance, according to the standard number given by the customer to buy online, the torx flat head screws bought back is found to be larger than the original screw head size. After the screwing, it was found to be very uneven from the surface, and there was a place that was convex. Then find out a grinding wheel to grind the head. After assembly, it is flat from the surface. Why is this happening? One is the tolerance problem at the time of production. It may be that some of the torx flat head screws are moved according to the upper tolerance and some are taken according to the lower tolerance. Another one i...