Stainless steel outer hexagon bolt or outer hexagon screw. Stainless steel hex screws are divided into three grades: A, B, and C. Grades A and B represent screw types with relatively high accuracy. The use of these stainless steel hex screws will have much higher tolerance and quality requirements for the product, so they will not be used frequently. C-grade stainless steel external hexagonal screws, which are commonly used, do not require high precision and are widely used by many people. Therefore, they are widely used.
The production process of stainless steel outer hexagonal bolts involves cutting the wire first, cold heading to shape the hexagonal head, rubbing the outer thread of the polished rod, and then undergoing full inspection and passivation processes to complete the process. There are three common types of stainless steel hex screws: SUS201, SUS304, and SUS316, among which 304 is the most commonly used material. 316 material is mostly used for making lathe parts, and its price is also slightly higher than 304.
Stainless steel hex screws are generally used together with nuts to achieve a tightening effect. They have a bright appearance and good corrosion resistance, and are deeply loved by people. Stainless steel external hexagonal screws are also divided into half tooth and full tooth. Generally, longer specifications are half tooth. Half tooth stainless steel external hexagonal screws are not only convenient to install, but also have the same anti loosening effect as half tooth.
What aspects should be considered to determine the quality of stainless steel outer hexagonal bolts? Firstly, when obtaining the stainless steel outer hexagonal bolt, it is necessary to compare it with the standard and check if some important dimensions are qualified, such as hexagonal opposite sides, head thickness, thread diameter, thread length, etc. If these basic dimensions are correct, then perform a spot check on the threads to see if there are any dirt or defects. If there are any defects in the threads, it may cause the nuts to fail to tighten.