Miller .375-16 x 1.25 Hex Washer Head Locking Screw

Secure Your Equipment with the Miller 201961 Replacement Screw

Maintenance and repair are unavoidable realities in the welding industry. When reassembling a Miller power source after cleaning or repair, using the correct hardware is just as important as the internal electronics. The Miller 201961 Screw is a specific .375-16 x 1.25-inch fastener used throughout various Miller welding machines. It is designed to handle the rigors of the shop environment, ensuring that panels, covers, and internal mounts remain tight despite the daily abuse of industrial use.

One of the most common issues with welding machines is vibration. The hum of a heavy transformer, the spin of a cooling fan, and the movement of the machine around the shop can all cause standard screws to vibrate loose over time. This screw addresses that problem with a specialized serrated locking face under the hex head. As you tighten the screw, these serrations grip the metal surface of the machine case, acting as a built-in lock washer. This prevents the screw from backing out, keeping safety guards and panels securely in place to protect both the operator and the machine's internal components.

The Hex Washer Head design makes installation easy and efficient. You can drive this screw with a standard socket or wrench, and the integrated washer means you don't have to fumble with loose flat washers during assembly—a small detail that saves time and frustration when working in tight spaces inside a welder. The 0.78-inch diameter of the washer head also helps protect the paint and metal of your welder's case by spreading the pressure, preventing damage to the sheet metal around the hole.

This screw is plated for corrosion resistance, protecting it from the humidity and atmospheric contaminants often found in fabrication shops. Using genuine Miller parts like the 201961 ensures that you aren't guessing at thread pitches or steel grades. You get the exact part the machine was built with, guaranteeing a perfect fit. Don't compromise your equipment's reliability with mismatched hardware; keep your Miller welder running tight and true with the correct OEM replacement screws.