According to the material, there are iron, that is, carbon steel and stainless steel. This is rarely used, and it is basically hard to see in the market. The hex socket screw is our common screw head. Its advantage is that the screw head (the force position of the wrench) is thinner than the inner hexagon, and in some places it cannot be replaced by the inner hexagon.
Second, the hexagon socket bolts are divided into cylindrical head hexagon socket bolts according to the head. Allen wrenches are generally in the shape of a curved square with a 90° turn. There is also a special category of national standards, called headless hexagon socket bolts.
The round head can be din7504k self drilling screws Suppliers easily slanted in and removed to install some parts that are inconvenient for the wrench to be installed. The more commonly used one is to count cylinder head hexagon socket bolts, also called cylinder head hexagon socket screws. Stainless steel hexagon socket bolts are also made of stainless steel SUS304 and SUS202.. Cut the two ends of the hexagonal steel bar and then bend it to 90 degrees to form a hex socket screw wrench.
The hexagon socket screwdriver looks like. Hexagonal screws with hexagonal sides. The bent end is long and the other is short. The screw manufacturer teaches you to distinguish the biggest difference between the two: First, the hexagon socket screws are often used in machinery, and they mainly have the advantages of easy fastening and disassembly, and not easy to slip corners.
In addition, machines with low cost, low power strength, and low precision require much less internal hexagon screws than external hexagons. The countersunk head hexagon socket bolt has a flat head and a hexagon socket inside. The kind with hexagonal sides. The long end is divided into a round head (a hexagonal cylinder is similar to a sphere) and a flat head. This is the most commonly used, and there are many types of it
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