Product description

The 8120325 serrated washer head screw is a specialized Grade 5 fastener designed for high-vibration applications on Coats equipment. The unique head design features a built-in flange with serrations on the underside that "bite" into the mating surface when tightened. This mechanical locking action prevents the screw from backing out due to the constant vibrations generated during tire changing or balancing cycles. As a Grade 5 fastener, it offers superior tensile strength compared to standard bolts, making it suitable for critical mounting applications. Using these specialized screws eliminates the need for separate lock washers and provides a more secure, permanent fastening solution for your tire service machines.

Product highlights

• Vibration Resistant: Under-head serrations provide a mechanical lock to prevent accidental loosening.
• Grade 5 Strength: High-tensile steel construction handles significant mechanical stress and torque.
• Integrated Flange: Built-in washer head distributes pressure and eliminates the need for separate hardware.
• Precision Threading: Accurate 5/16-18 threads ensure a perfect fit in tapped machine components.

Specs

• OEM Reference: 8120325
• Dimensions: 5/16-18 X 1 inch
• Material Grade: Grade 5
• Manufacturer Part Number: am8120325
• Country of Manufacture: USA

Direct replacement models

• Coats: 8120325
• Fits Models: High-vibration assemblies on Coats tire changers and balancers.

You will receive the same product or an OEM-Equivalent that meets the highest standard of the OEM with warranty that will be a direct-fit. Manufactured with rigorous industry standards and certified in the USA with superior quality to the OEM.