Miller 112480 Set Screw 1/4-28 x 0.375 Cup Point Socket Head

Keep Your Miller Machine Running Smoothly

There is nothing more frustrating than a production stoppage caused by a tiny, missing part. The Miller 112480 Set Screw might look small, but it plays a massive role in keeping your welding equipment operational. Whether it is securing a drive roll in your wire feeder, holding a control knob in place, or locking down an internal component, this set screw is the glue that holds the moving parts of your machine together. When a set screw works itself loose and gets lost in the shop floor dust, you can't just jam any bolt in there—especially not with Miller's precision equipment.

This is a genuine Miller OEM part, meaning it is the exact replacement for the original. It features a 1/4-28 fine thread. Most standard hardware store bolts are coarse thread (1/4-20), so trying to force a generic screw into your machine will likely strip the threads and turn a fifty-cent repair into a five-hundred-dollar nightmare. The "Cup Point" design on this screw is specifically engineered to bite into the metal shaft it tightens against, ensuring that once you lock it down, it stays locked down, even when your machine is vibrating during heavy welding operations.

Why use OEM Fasteners?

Welding machines endure heat, dust, and constant vibration. The steel used in Miller's OEM fasteners is tested to withstand these conditions without shearing or deforming. This screw uses a standard Allen key (hex key) for installation, allowing you to get it tight without stripping the head. Keep a few of these in your maintenance kit or parts bin. It’s cheap insurance against downtime. When you are troubleshooting a slipping drive roll or a loose assembly, having the correct 1/4-28 x 3/8" set screw on hand means you can fix the problem in minutes and get back to laying beads.

Installation Tip: Ensure the threads in the receiving hole are clean and free of debris before inserting the new screw. Because this is a cup point screw, it is designed to leave a small ring mark on the shaft it secures—this is normal and indicates a solid mechanical lock.