Miller 1/2-13 Serrated Flange Nut (Pack of 4)

Authentic Miller 222794 Serrated Flange Nut (Pack of 4)

Maintain the structural integrity of your welding fleet with the Miller 222794 Serrated Flange Nut. This specialized fastener is a critical component for securing various parts within Miller welding machines. Identifying the correct hardware is vital for proper machine repair, and this 1/2-13 thread nut is manufactured to the precise tolerances expected from Miller Electric. Whether you are replacing a lost fastener during routine maintenance or performing a comprehensive rebuild of a power source, this OEM part ensures that your equipment remains safe, secure, and operational. This product is supplied as a convenient pack of four, allowing you to keep spares on hand for immediate repairs.

Engineered for Heavy-Duty Applications

The Miller 222794 is not just a standard hardware store nut; it is selected for its specific mechanical properties. The "500-13" specification refers to its 0.500-inch (1/2 inch) nominal diameter and 13 threads per inch, a common coarse thread used for heavy-duty clamping. The defining feature, however, is the serrated flange. In the high-vibration environment of a welding shop—where machines are often moved, bumped, or subjected to engine vibration—fastener security is paramount. The serrated face acts as a built-in locking mechanism, digging into the metal surface to prevent the nut from loosening under dynamic loads. This ensures that internal components, chassis parts, and electrical connections remain tight and secure.

Specifications and Fitment

This nut features a 0.75-inch (3/4") hex drive, allowing for high torque application with standard wrenches or sockets. The flange has a diameter of 1.03 inches, which acts like a built-in washer to span oversized holes and distribute pressure evenly. Made from plated steel, it offers the necessary tensile strength for industrial applications while resisting surface corrosion. By choosing genuine Miller parts, you avoid the risks associated with mismatched grades or poor-quality metallurgy found in generic fasteners. Verify your machine's parts manual to confirm fitment, as this hardware is used across multiple Miller product lines.