Stainless Steel Three-Piece Bolts

Stainless steel three-piece bolts typically consist of a stainless steel bolt, a spring washer, and a flat washer. The spring washer is used to increase the bolt’s preload and prevent loosening, while the flat washer increases the contact area between the bolt and the connected components, reduces pressure, and protects the surface of the connected parts.

• Material Advantages: Made of stainless steel, these three-piece bolts offer excellent corrosion resistance and oxidation resistance, making them suitable for various harsh environments.

• Easy Assembly: The bolt, spring washer, and flat washer are pre-assembled, ensuring convenient installation.

• Effective Anti-Loosening: The use of a spring washer effectively prevents bolt loosening and enhances connection reliability.

• Workpiece Protection: The included flat washer evenly distributes tightening pressure, protecting the workpiece surface from scratches and damage while increasing the contact area for a more secure connection.

Common Types:

1. Pan-head three-piece combination bolts: The bolt head is pan-shaped, suitable for applications requiring a larger head contact area.

2. Hexagon head three-piece bolts: The bolt head is hexagonal in shape, suitable for applications requiring high tightening torque.

3. Cylindrical head three-piece bolts: The bolt head is cylindrical in shape, suitable for applications where the head needs to be concealed or where space is limited.

Notes：

• Select the appropriate specifications: Choose the correct bolt specifications based on the material, thickness, and load conditions of the connected components.

• Correct installation: Tighten the bolts to the specified torque to avoid over-tightening or looseness.

• Regular inspection: Periodically check the tightness of the bolts during use; if looseness is detected, retighten them promptly.

• Storage environment: Stainless steel three-piece combination bolts should be stored in a dry, well-ventilated environment to prevent moisture and corrosion.