KP30004 - Lincoln Electric 1.2mm (3/64") Aluminum Contact Tip - 25 Pack

Smooth Feeding for Aluminum Jobs

Every welder knows that aluminum can be a temperamental beast. One minute you're laying dimes, and the next, your wire burns back to the tip or bird-nests at the feeder. Often, the culprit isn't your machine settings or your technique—it's your contact tip. The Lincoln Electric KP30004 is a 1.2mm (3/64") contact tip specifically built to handle the quirks of aluminum wire. Standard tips designed for steel can be too tight once the aluminum wire heats up and expands, causing drag that ruins your feed. These tips are sized just right to let the wire glide through while keeping a solid electrical connection.

We know that time is money, and stopping every ten minutes to unjam a gun or replace a fused tip kills your rhythm and your paycheck. That's why these tips are made from high-quality copper that handles the heat of high-amperage spray transfer welding without melting down. They provide the consistent arc start you need for aluminum, helping you avoid those frustrating cold laps or soot-covered starts. The 25-pack quantity means you can toss a handful in your toolbox or keep the shop cabinet stocked, so you're never caught empty-handed in the middle of a critical project.

These tips are designed for 1.2mm wire, which is the sweet spot for a lot of structural and plate aluminum work. Whether you are welding on a boat hull, fixing a trailer, or fabricating custom parts, using a tip marked "ALUM" makes a noticeable difference. The bore is smooth to prevent shaving the soft wire, which keeps your liner cleaner for longer. It’s a small part that plays a huge role in how your day goes.

Don't fight your equipment. If you are running aluminum, use consumables made for aluminum. The KP30004 gives you the clearance and conductivity you need to keep the puddle wet and the wire moving. Swap out your old, worn-out tip for a fresh Lincoln Electric specialized tip and feel the difference in your feed reliability immediately.