DIN7991 304 HEX SOCKET SCREW
DIN7991 countersunk head socket head cap screws, the head is conical, with a hexagonal groove in the middle, after installation, the screw head can be embedded in the mounting surface, the surface is smooth and beautiful.
The head of the countersunk hexagon socket head screw can be embedded in the component, which can apply a large torque and has a high connection strength, which can replace the hexagon bolt. Commonly used in joints that require compact structure and smooth appearance. Stainless steel 304 countersunk head hexagon screws are anti-corrosive and anti-rust, which is very suitable for outdoor decoration and industry.
2. Marking method:
Thread specification d = M8, nominal length L = 40mm, performance grade 8.8, surface oxidation grade A hexagon socket countersunk head screws:
Hexagon socket countersunk head screws DIN7991-M8 * 40-8.8
DIN7991 Hexagon socket countersunk head screws are similar to countersunk head screws. The nail head can be buried in the component, the connection strength is large, and the head is screwed with an hexagon socket wrench. A sink hole is required during installation to keep the surface of the workpiece smooth and beautiful.
Hexagon socket countersunk head screws are often used in machinery, and are easy to tighten and remove.