The classification of hexagonal screws is based on the different shapes of the screw heads, which are divided into inner and inner hexagonal screws, and has nothing to do with the raw material of the screw and the bearing capacity of the screw.

1. The stainless steel hexagon socket screws are the same as the external hexagon screws:

The scale of application of both is very extensive. From small hardware, small electronic products, electrical products, to cars, ships, aircraft cannons, electrical, electrical appliances, chemicals, water conservancy, machinery and equipment, furniture, construction and other fields. Stainless steel inner hexagonal screws and outer hexagonal screws are all cooperative nuts, which are used to fasten and connect two connected parts and components with through holes. There are three types of hexagon screw inspection: A, B, and C. The first two are refined bolts, which are rarely used. Generally speaking, ordinary bolts refer to grade ordinary bolts. Hexagon socket screws and socket screws of grade A and B are used more and more important. Moreover, it is used more frequently in occasions with high requirements for assembly accuracy, large impacts, moving or slaughtering loads. Grade-grade hexagon socket screws and external hexagon screws are used for occasions where the appearance is relatively rough and stable, and the assembly spirit is not required.

2. The difference between stainless steel inner hexagonal screws and outer hexagonal screws:

a. In terms of shape: the outer edge of the thread head of the inner hexagonal screw is round, and the middle is a concave hexagonal shape, and the outer hexagonal thread is the side of the more common hand-threaded head that is hexagonal. Kind.

b. The purpose is also slightly different: Hexagon socket screws are often used in machinery, and they mainly have the advantages of easy fastening and disassembly, and not easy to clear corners. Hexagonal inner handle is generally a curved square shape with a 90° turn. The bent end is long and short. When the short side is used to screw the screw, the long side can save a lot of force and can better tighten the silk.

c. In addition, the cost is low and the power intensity is small. For machines with low precision requirements, the number of hexagon socket screws used is much less than that of the external hexagon.