080389 - Miller 5/16-18 x 1.00 Hex Washer Head Self-Forming Screw

Genuine Miller Replacement Hardware

The Miller 080389 Screw is a specialized fastener designed to meet the rigorous standards of Miller Electric welding equipment. When maintaining or repairing high-performance industrial machinery, using genuine OEM parts is critical to ensuring longevity and safety. This specific screw features a .312-18 (5/16-18) thread size and a 1.00-inch length, making it a common component in the structural assembly of various welder chassis and panels. Sourced directly from the manufacturer, this part guarantees the correct material grade and dimensional tolerance required for your equipment.

Durable Construction

Manufactured from high-quality steel, this screw is plated to resist corrosion and oxidation, a necessary feature for equipment that often operates in harsh industrial environments. The plating ensures that the fastener remains easy to remove during future service intervals without seizing due to rust. The Hex Washer Head design provides an integrated washer surface, which distributes the clamping load over a wider area than a standard hex head. This is particularly important when fastening sheet metal panels, as it prevents the screw head from digging into the material and damaging the finish.

Precision Engineering

This fastener is not just a standard bolt; it is a self-forming (SLFFMG) Tap-RW screw. This means it is designed to roll its own mating threads into a pre-drilled hole or nut member, creating a zero-clearance fit. This type of fit is exceptionally resistant to loosening caused by the high-frequency vibrations often generated by welding power sources and cooling fans. By choosing the correct Miller 080389 screw, you are ensuring that your machine's enclosure remains secure, protecting internal components from dust and debris.

Application and Fitment

While primarily used in Miller equipment, the specifications of this screw make it a robust fastener for various heavy-duty applications. However, we always recommend verifying your machine's parts manual to confirm compatibility. Whether you are replacing a lost fastener during routine maintenance or performing a comprehensive rebuild of a vintage welder, this genuine Miller part provides the reliability professional technicians demand.