12101520 - Tweco 21-62-FAS Flat Arc Spot MIG Nozzle, 5/8" Bore (2-Pack)

Achieve Perfect Spot Welds with Tweco

If you are performing spot welds on automotive body panels, sheet metal fabrication, or tacking projects, the Tweco 21-62-FAS Flat Arc Spot Nozzle is the tool you need to ensure consistency and quality. Standard conical nozzles can make it difficult to hold the gun steady at the exact right distance for a spot weld, leading to burn-throughs or weak welds. This specialized nozzle solves that problem with its flat-faced design.

Why Use a Flat Arc Spot Nozzle?
The 'FAS' nozzle allows you to press the gun directly against the workpiece. The flat edges sit flush on the metal, stabilizing your hand and setting the perfect distance between the contact tip and the work surface automatically. This means you can pull the trigger and get the exact same spot weld every single time, without worrying about your hand shaking or the distance fluctuating. It is a game-changer for repetitive spot welding tasks.

Built for Tweco Reliability
Designed to fit the legendary Tweco No. 1 and No. 2 MIG guns, this nozzle slides right onto your existing gas diffuser (part No. 51). It features a generous 5/8-inch bore to ensure your weld pool is fully protected by shielding gas, preventing porosity. Made from durable copper alloy, it resists heat buildup and is easy to clean if spatter accumulates. Sold in a convenient pack of two, these nozzles are an essential addition to any welder's kit who works with thin gauge steel or performs frequent tack welding.