Harris 73-3 Cutting Attachment

Harris 73-3 Cutting Attachment

The Harris 73-3 is a heavy-duty cutting attachment built for professional metal fabrication and repair. It connects to compatible Harris torch handles such as the 18-5 and 43-2 models. The brass body and 90-degree head angle provide durability and access in tight workspaces. Welders and fabricators needing reliable oxy-fuel cutting capacity up to six inches will find this tool suited to the task.

Practical limits of oxy-fuel cutting

Maximum cutting thickness reaches six inches when using the correct tip and fuel gas. Compatible fuels include acetylene, natural gas, propane and propylene, each requiring the matching tip from the 6290 series. The 9 1/2 inch overall length and 24-ounce weight define the handling envelope for precision cuts. Operators must select the correct tip series — 6290, 6290-NFF, 6290-NX, 6290-NXM, 6290-NXP, 6290AC or 6290S — for the chosen fuel and material thickness.

Upgrading from lighter cutting heads

This attachment replaces lighter-duty cutting heads that cannot sustain heavy-duty cycles or achieve the six-inch maximum thickness. The jump is worth it when daily cutting demands exceed the capacity of standard-duty equipment or when fuel flexibility across acetylene and alternative gases is required. It is not for users who only perform occasional thin-sheet work or who lack a compatible Harris torch handle such as the 18-5 or 43-2. Buyers needing a different head angle or a lighter tool for overhead use should consider other configurations.