The ISO7379 standard covers Hexagonal cylindrical head shoulder screws, which are fasteners with a hexagonal drive slot and a cylindrical head designed with a shoulder for preventing the screw from sinking into the material to be fixed.
Carbon Steel: Typically used for general applications.
Stainless Steel: For environments where corrosion resistance is required.
Alloy Steels: Used in applications requiring high strength or high temperature resistance.
Advantage:
Hex Drive: The hex drive design provides a compact drive allowing for higher torque transfer. 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. Shoulder Construction: The shoulder provides a support point for higher preload forces and prevents over-tightening or countersinking of the screw. High Strength Material: Usually made of high strength 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.