Shenzhen Shi Shi Tong Metal Products Co., Ltd

Sems screws generally have a flat washer and a spring washer in the threaded portion of the screw, but some have no spring washer, only a flat washer. Generally, the screws do this mainly to prevent loosening. But why can’t the  hex socket countersunk head screw  be made into a sems screw? Many of the common sems screws we have are pan heads, round heads, cup heads, etc. These head types have a feature that the head is flat below. The head of the  hex socket countersunk head screw  is not the same as the head type, and it is not flat. Therefore, if the  hex socket countersunk head screw  is made into a sems screw, it may cause slippage, untightening, etc. during use, and it may not be able to prevent loosening. Therefore, the Hexagon socket head screw is not recommended to be a sems screw. If you want to customized  hex socket countersunk head screw   please send email: annie.li@szsst88.com

An email from Mr. Zeng from Jiangsu sent us an email asking us to design the  hexagon socket  countersunk head screw  logo according to his attachment requirements. After evaluating the drawings of Mr. Zeng, we found that we can do it. Because the logo part is not sinking or protruding on the drawing. I asked Mr. Zeng if the  hexagon socket countersunk head screw  logo was recessed or protruding. Mr. Zeng said that he wants to stand out. When we ordered the corresponding mold back, we started to adjust the production. After the  hexagon socket countersunk head screw  was sent to Mr. Zeng, Mr. Zeng confirmed that there was no problem in appearance and size, and then took it to the actual assembly. See how the assembly works. Two days later, Mr. Zeng said that the test had passed, and the next batch was produced according to the goods that were now given to him. And ask if we can put their logo on the package. Whether you print a logo on the t...

Mr. Pan has ordered  cross recessed countersunk head screw  from 2 different screw manufacturers, and the sizes given to them are the same.But the screws produced by these two companies are a little different. Pan from these  cross recessed countersunk head screw  see, mainly is the groove type is a little different, one of the screw manufacturers of the edge of the cross groove is straight, the center of the cross groove of the other has an arc, is not straight.Pan then asked stone if the two cross-grooves would have any effect on the assembly. In fact, this in the assembly of the time is not affected, the reason for this situation, mainly because the use of the cross groove punch is different, all  cross recessed countersunk head screw  cross groove will be different.