The ISO 7380 standard covers Hexagon socket button head machine screws, which are fasteners with a hexagon socket drive slot and a cylindrical head designed with a semicircular projection to provide additional torque and prevent the screw from loosening during use.
Stainless Steel (304/316): Offers superior corrosion resistance and is suitable for moist or corrosive environments. The 316 grade has additional molybdenum, providing even better corrosion resistance, especially in marine applications.
Carbon Steel: Provides good strength and is the most common material for bolts. It may require additional surface treatments like galvanizing for increased corrosion resistance.
Alloy Steel: Offers enhanced strength and durability. It is often used in high-stress applications where high tensile strength is required.
Advantage:
Hex Drive: The hex drive design provides a compact drive that allows tightening and loosening with an Allen key or Allen wrench, ensuring ease of installation and fastener security. Cylindrical Head Design: Cylindrical heads are suitable for applications that require the head of the screw to be flush with or slightly below the surface, providing a neat appearance. Semi-circular projection: The semi-circular projection of the head (button head) increases the torque-carrying capacity of the screw while providing a better visual appearance. High Strength Materials: Typically made of high strength steel, such as performance grade 12.9 carbon steel or A2-70 stainless steel, with good mechanical properties and corrosion resistance.
Scope of Application
Mechanical Manufacturing: In the field of mechanical manufacturing, it is used to fix rotating or sliding parts such as gears, bearings and bushings. Automotive industry: in the engine, gearbox and other critical parts of automobiles to ensure the correct positioning and fixation of parts. Electrical equipment: In electrical equipment, used to keep electrical connectors and terminals in place and prevent loosening due to vibration. Aerospace: in the aerospace sector, to ensure the precise installation and fixing of critical components to withstand extreme operating conditions.
