The ISO 7379 standard deals with shoulder screws (Hexagon socket head shoulder screws), a type of fastener with a hexagonal drive slot and a shoulder that is typically used where an aesthetic and compact fit is desired. The head design of these screws allows them to be flush or slightly below the surface and are suitable for a variety of industrial and architectural applications.

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:

SHOULDER DESIGN: The shoulder of the screw with shoulder provides a support point that can withstand high preload forces while preventing the screw from being over-tightened. High-strength material: Usually made of high-strength steel, such as carbon steel of performance class 12.9 or stainless steel A2-70, with good mechanical properties and corrosion resistance. Corrosion resistance: Screws made of stainless steel, such as SS 304, provide good corrosion resistance.

Scope of Application

Automotive industry: in the fixing of interior and exterior components of automobiles, to provide an aesthetic and strong connection. Machine building: in mechanical equipment, for fixing components that need to be dismantled frequently, such as panels, lids and doors. Construction and decoration: in building decoration, for fixing various decorative materials such as panels, tiles and glass. Electronic equipment: in electronic equipment, for fixing circuit boards and other components.