Product introduction
The cylinder head socket head screw, also referred to as the hexagon socket bolt, cup head screw, socket screw, is not the same, but it means the same. Generally speaking, the commonly used hexagon cylinder head screws are 4.8, 8.8, 10.9 and 12.9. Also called hexagon screw, also called hexagon bolt. The head is hexagonal and cylindrical. According to the material, there are stainless steel and iron ones. Stainless steel SUS202 socket head screw is made of stainless steel, which is made of stainless steel, including stainless steel SUS304 socket head screw and stainless steel SUS316 socket head screw. Iron is classified according to the strength grade of the hexagon socket head screw, including 4.8 class socket head screw, 8.8 class hexagon socket head screw, 10.9 class hexagon socket head screw and 12.9 class hexagon socket head screw. The hexagon socket head screw of grade 8.8-12.9 is called high strength and high grade hexagon bolt. Standard No.: gb/t 70.1-2008.
Product use
Similar to countersunk head screw, the head of the screw is embedded in the machine parts, and the connection strength is large, but the screw must be installed and removed with the corresponding specification of Allen wrench. It is generally used on various machine tools and accessories.
Specification type
The national standard of the national standard for hexagon socket head screws is GB 70-1985, with many specifications and sizes. The common specifications and standards are 3 * 8, 3 * 10, 3 * 10, 3 * 12, 3 * 12, 3 * 16, 3 * 20, 3 * 25, 3 * 30, 3 * 30, 3 * 45, 4 * 8, 4 * 8, 4 * 10, 4 * 10, 4 * 12, 4 * 12, 4 * 16, 4 * 20, 4 * 25, 4 * 30, 4 * 35, 4 * 35, 4 * 35, 4 * 35, 4 * 45, 5 * 10, 5 * 10, 5 * 12, 5 * 12, 5 * 16, 5 * 16, 5 * 16, 5 * 20, 5 * 20, 5 * 20, 5 * 25, 6 * 12, 6 * 12, 6 * 14, 6 * 14, 6 * 16, 6 * * 30,8 * 35, 8 * 40, etc.
