
Every welder knows the frustration of snapping a drill bit halfway through a job, especially when working on a chassis or inside a cramped cabinet. The Walter 5/16" SST Stub Drill is the solution to that headache. Designed specifically for the demands of professional metalworkers, this "stubby" bit is shorter than your average drill bit, giving it incredible strength. Because it has less length to flex, it is far less likely to break when you are leaning into a cut or using a hand drill at an awkward angle. It is the reliable workhorse you need when you can't afford to stop and fish out a broken bit.
This bit isn't just strong; it's smart. It features a 135-degree split point that centers itself the moment it touches the metal. You can say goodbye to your center punch and the annoyance of the bit wandering across your workpiece, scratching up the finish. It grabs instantly, even on round tubing or polished stainless steel. This makes it an excellent choice for drilling out spot welds, installing rivets, or making pilot holes for larger fasteners in automotive and fabrication settings.
Walter has coated this bit with their special SST bronze treatment, which acts like a shield against heat. Drilling through stainless steel and mild steel generates intense friction, but this coating helps the bit slice through smoothly while clearing chips fast. The result is a cleaner hole with fewer burrs to grind off later. Whether you are drilling through sheet metal, thin-walled tubing, or structural steel, the Walter 01H020 delivers the bite and the lifespan that professional welders demand.
Why Welders Choose This Bit:
| Additional Information |
|---|
| Brand:Walter Surface Technologies |
| Diameter:5/16 in |
| Packaging Description:1 per each |
| Point Angle:135° Split Point |
| Drill Style:Stub (Screw Machine Length) |
| Coating:SST Bronze Surface Treatment |
| Flute Design:Short Flute |
| Material Application:Stainless Steel, Mild Steel, Non-Ferrous Metal, Sheet Metal |