GB6187 is a Chinese national standard, which specifies the type size, technical conditions and marking of type 2 all-metal hexagon flange face lock nuts. This type of nut combines the features of metal insert locknuts and Hexagon flange nuts with more efficient locking function.

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:

Efficient Locking: The metal insert design provides superior locking performance and prevents loosening. Increased contact area: The hexagon flange design increases the contact area between the nut and the workpiece, providing a stronger connection. Durability: Made of high-strength materials, suitable for high-load applications.

Scope of Application

Mechanical and equipment assembly: For the assembly and repair of mechanical equipment, providing stable fastening. Building and Structural: In building and structural projects to ensure structural stability and safety. Pipe Connections: Commonly used to connect pipes and flanges, especially in applications where extra tightening and prevention of loosening is required.