Contact Tip, Fastip .312" OD .052-3/64" AL Wire | MIL206189

The Miller Electric 206189 FasTip Contact Tip features a .312" (8 mm) Outside Diameter and is precision-bored for .052" or 3/64" (1.2 mm) aluminum wire. Unlike standard steel tips, aluminum-specific FasTip™ models have a slightly oversized internal diameter to accommodate the thermal expansion of aluminum wire as it heats up during the welding process. This prevents the wire from "seizing" or dragging inside the tip, which is a common cause of birdnesting and erratic arc performance.

• Optimized for Aluminum: The bore is specifically sized for 3/64" (1.2 mm) aluminum alloys, allowing for smooth wire travel even at high temperatures.
• FasTip™ Quick-Change Design: Features a threadless or coarse-thread "drop-in" design (depending on the diffuser) that allows for extremely fast replacements and better heat transfer.
• High-Conductivity Copper: Manufactured from premium-grade copper to ensure maximum electrical contact and rapid heat dissipation, reducing the risk of "burn-back."
• Consistent Arc Start: The precision-machined interior ensures a reliable electrical path, resulting in fewer spatter-heavy starts and a more consistent weld bead.
• Industrial Durability: Built to withstand the high-amperage demands of Spoolmatic® and XR™ push-pull systems, making it a staple for marine and trailer fabrication.