Hardware Knowledge: Introduction to Stainless Steel Hexagon Screws

Stainless steel hexagonal screws are the most frequently used type of stainless steel standard parts. The main function of the external thread it has is to cooperate with the nut. Using this threaded connection method, the two parts are combined into one.

Material: SUS304/SUS316 stainless steel The stainless steel hexagonal screws currently produced or sold and the standards used include:

Hexagon head full thread stainless steel screws DIN933/GB5783/ISO4017/ANSIB18.2.1/JISB1180

Hexagon head half-thread stainless steel screws DIN931/GB5782/ISO4014/ANSIB18.2.1/JISB1180

Hexagon head SUS316 stainless steel screw, thin rod half tooth stainless steel screw GB5784

Although the above two half-thread screws are also half-threaded, they are divided into thick rods and thin rods. The thick half-thread means that the diameter of the polished rod is larger than the diameter of the screw before the stainless steel screw is screwed. , We take the M8 screw as an example. The diameter of the polished rod before rubbing is 7.85mm~8.0mm, the diameter of the rubbing is 7.0mm~7.05mm, and the outer diameter of the teeth after rubbing is 7.85mm~9.95mm, which is similar to the diameter of the polished rod. The outer diameter of the two is on the outer plane; the so-called thin rod half tooth means that the polished rod before rubbing is 7.0~7.05. After rubbing, the outer diameter expands to 7.85~9.95, and the polished rod part is not To the naked eye, it seems that the outer diameter of the tooth is thicker than that of a polished rod. Of course, we can also conclude that the DIN931 standard stainless steel thick rod half-thread screw is more expensive than the DIN933 stainless steel thin rod half-thread stainless steel screw. .