Hexagon socket head cap screw

There are three kinds of hex socket screws commonly used according to the head type. One is ISO7380 pan head hex socket screws,stainless steel plum groove screws customized, the other is DIN7991 countersunk head hex socket screws, the third is DIN912 cylindrical head hex socket screws.

Stainless steel hex screws is more common in our life, the Allen screw in stainless steel and is called "stainless steel cylinder head, socket head cap screw or stainless steel hex socket bolts, although the name is different, but all of them is to point to the same product, inner hexagonal slot type is now manufacturing, one of the more frequently used screw type because of its easy to tighten, It is beneficial to disassembly, not easy to slip Angle and other advantages and is widely used in machinery industry.