213600 - Miller .500-13 x 3.00 Hex Flange Head Screw Grade 8

Genuine Miller OEM Replacement Hardware

The Miller 213600 Screw is a high-specification fastener designed for critical structural applications within Miller welding equipment. As a genuine OEM part, it guarantees the precise dimensional tolerances and material properties required to maintain the integrity of your machine. This specific screw features a .500-13 (1/2"-13 UNC) thread pitch and a length of 3.00 inches, making it suitable for securing heavy components where substantial clamping force is necessary.

Grade 8 Strength and Durability

Manufactured to Grade 8 specifications, this screw represents the highest standard in commercially available carbon alloy steel fasteners. Grade 8 hardware is heat-treated to achieve superior tensile strength and yield strength compared to Grade 5 or Grade 2 alternatives. This makes the Miller 213600 ideal for high-stress areas in industrial machinery where vibration, thermal expansion, and mechanical loads are prevalent. Using lower-grade substitutes in these applications can lead to shear failure or elongation, potentially compromising the safety and functionality of the welding power source.

Integrated Flange Design

The hex flange head design is a key feature of this component. The integral flange at the base of the hex head acts as a built-in washer, distributing the clamping load over a larger surface area. This design helps prevent the bolt head from embedding into the mating material and reduces the risk of loosening due to vibration—a common occurrence in heavy industrial environments. Additionally, the flange design streamlines assembly and maintenance by eliminating the need to stock and handle separate flat washers.

Plain Finish for Precision

This screw is supplied with a plain finish (PLN), meaning it does not have a thick plating layer like zinc or hot-dip galvanization. Plain finish fasteners are often preferred in precision assemblies where thread tolerance is critical, as plating can sometimes interfere with fitment in tight tolerances. While it requires appropriate storage to prevent corrosion before installation, the plain finish ensures the most accurate engagement with internal threads.