S222125-029 - Hobart Fabshield 21B 5/64" Self-Shielded Flux-Cored Wire 33lb Spool

Hobart Fabshield 21B 5/64" Self-Shielded Wire

Take your welding capabilities to the next level with Hobart Fabshield 21B, a self-shielded flux-cored wire that eliminates the hassle of gas cylinders. This 33lb spool of 5/64" wire is perfect for welders who need a reliable, all-position solution for carbon steel. Because it generates its own shielding vapor, it is the ideal choice for outdoor welding where breeze and wind would otherwise compromise the weld integrity. It allows you to weld anywhere your machine can reach without tethering you to a gas supply.

Forgiving and Easy to Use

One of the standout features of Fabshield 21B is its forgiving nature. It is designed to bridge gaps and handle fit-up issues better than many solid wires. If you are working with material that isn't perfectly prepped—such as steel with light rust, mill scale, or galvanized coatings—this wire powers through to create strong, durable bonds. The arc is stable and smooth, producing a bead contour that is generally flat to slightly convex. Slag removal is straightforward, saving you time on grinding and cleanup between passes.

Ideal for Repairs and Fabrication

The 5/64" diameter is substantial enough for heavy fabrication tasks, offering good penetration and deposition rates. It is widely used for repairing agricultural equipment, general fabrication of racks and stands, and assembly of prefabricated steel structures. The wire runs on DCEN polarity, which helps prevent burn-through on slightly thinner sections while maintaining the heat input needed for thick plate. With Hobart's reputation for quality consistency, you can trust Fabshield 21B to run smoothly from the start of the spool to the finish, ensuring your welds are up to spec every time.