Cross-slot round head screws in the production process, whether in the process of sales and delivery to customers, we have to carry out its screw quality testing. Quality testing process from the beginning of the first cross-head screw screw thread material into our production screw manufacturers to industry, we must first detect the size of the wire diameter screw, and the detection of screw material, the general screw diameter is caliper, measurement Diameter size, whether the size of self-ordering the same. After testing these, is in the middle of the production process of detection, starting from the head of the screw to determine the size of the head, the head on the side, diagonal, cross groove depth, screw tolerance range and so on. These are used to detect the caliper. In the case of rubbing teeth is the detection, the main is the tooth thread can not pass through the rules, screw thread can pass regulation, stop regulation only. In the second is the electroplating measurement problem. Plating is good, is not in line with environmental requirements, can not have the required time salt fog. Tools are environmentally friendly testing machines, salt spray test machine.
In summary, in the production and sale of cross-slot screw, the use of the necessary tools to detect the quality of the screw is certainly necessary to sum up to summarize as follows: caliper, hardness tester, salt spray machine, environmental testing machines, pass regulations and so on.
