203567 - Miller 203567 Shoulder Screw .250-28 Torx Drive

Precision Miller Replacement Hardware

The Miller 203567 is a specialized shoulder screw designed to meet the rigorous demands of industrial welding equipment. Manufactured by Miller Electric, this component serves as a direct OEM replacement for damaged or missing screws in various power sources, wire feeders, and welding assemblies. Unlike standard threaded fasteners, a shoulder screw (also known as a stripper bolt) features an unthreaded cylindrical section between the head and the threads. This shoulder provides a precision bearing surface for rotating parts or acts as a spacer to ensure consistent gaps between components. Using the correct shoulder screw is critical for maintaining the mechanical integrity of your machine.

Technical Specifications

This fastener is engineered from high-strength steel to withstand the vibration and thermal cycling common in welding environments. It features a .250-28 UNF thread, which is a fine thread pitch providing higher tensile strength and better resistance to loosening from vibration than coarse threads. The critical shoulder dimensions are a diameter of 0.247 inches and a length of 1.120 inches. These precise tolerances ensure that any moving parts mounted on the shoulder rotate smoothly without excessive play, or that static panels are spaced exactly as the engineers intended.

Torx Drive System

The head of the Miller 203567 utilizes a Torx drive system. Torx heads are superior to traditional hex or Phillips drives in industrial applications because they allow for higher torque application without "cam-out" (the tool slipping out of the screw head). This ensures that the screw can be tightened securely during maintenance and removed easily later without stripping the head, even after years of service in a shop environment. Technicians should ensure they have the appropriate size Torx bit to install this component correctly.

Application and Maintenance

Shoulder screws are often found in wire drive assemblies, tensioners, and enclosure mountings. If a shoulder screw becomes bent, worn, or stripped, it can lead to misalignment of internal components, increased wear on mating parts, or rattling noises during operation. Replacing compromised hardware with genuine Miller parts like the 203567 guarantees that your equipment remains within factory specifications. Always consult your specific machine's parts manual to verify that SKU 203567 is the correct part number for your model before ordering.