
Every welder knows the frustration of snapping a drill bit halfway through a job, especially when you are working in a tight corner or trying to drill through a stubborn piece of stainless sheet metal. The Walter 5/16" Hex SST Stub Drill (01H120) is the solution to those headaches. This isn't your average hardware store bit; it is a "stub" length bit, meaning it is shorter and thicker relative to its length. That extra rigidity means you can lean into it without it flexing, wandering, or snapping off when you need it most.
One of the standout features for fabricators is the 135° split point. If you work with sheet metal or polished stainless, you know how hard it is to keep a bit from skating across the surface and ruining the finish. This Walter bit centers itself the instant it touches the metal. You can say goodbye to the center punch and hammer for most applications. It bites hard and cuts clean, leaving you with a nice round hole and very little burr to clean up afterwards.
Time is money in the shop, and the Hex shank on this bit is a huge time-saver. It fits securely into quick-change adapters and impact drivers, so you can swap between a drill bit and a driver bit in seconds. No more spinning inside the chuck when you hit a hard spot. The bronze SST coating isn't just for looks, either—it helps the bit run cooler and shed chips faster, which keeps the cutting edge sharp longer, even when you are drilling through tough stainless steel or aluminum.
Whether you are drilling out rivets, installing brackets in a cramped engine bay, or just need a reliable bit for general fabrication, this Walter stub drill is a toolbox essential. It is built to take the abuse of daily metalworking and keep on cutting, saving you trips to the tool crib and keeping your project moving forward.
| Additional Information |
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| Brand:Walter Surface Technologies |
| Diameter:5/16 in |
| Shank Type:Hex |
| Point Angle:135° |
| Material Application:Steel, Stainless Steel, Sheet Metal, Aluminum |
| Drill Type:Stub Drill, Screw Machine Length |
| Coating:Bronze SST Surface Treatment |
| Flute Design:Short Flute |
| Packaging Description:10 per each |