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01H020 - Walter 5/16 Sst Stub Drill

Packaging: 10 per each
$13.64/ea $119.80/10 per each only $11.98/eaSave 12%

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OVERVIEW

The Tough Bit for Tight Spots and Hard Metal

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:

  • Fits Anywhere: Short length gets into tight corners where standard drills fail.
  • No Walking: Starts drilling exactly where you point it, every time.
  • Built for Stainless: Handles the heat and hardness of stainless steel without dulling instantly.
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

INCLUDED

  • 1 x Walter 5/16" SST Stub Drill Bit

APPLICATIONS

  • Drilling thin-walled sheet metal
  • Automotive body work and chassis fabrication
  • Stainless steel fabrication
  • Drilling in confined spaces or tight corners
  • General MRO and maintenance drilling
  • Non-ferrous metal drilling (aluminum, copper)
  • Drilling round surfaces and tubing

FAQ

A stub drill (or screw machine length drill) has a shorter flute and overall length compared to a standard jobber drill. This makes the stub drill significantly more rigid, reducing the chance of breakage and allowing for use in tighter spaces.

No, this drill bit features a 135° split point geometry which is self-centering. It prevents the bit from 'walking' or skating across the surface, allowing you to drill directly without pre-punching.

Yes, the Walter SST Stub Drill is specifically designed with a heavy-duty construction and a bronze surface treatment that handles the heat and hardness of stainless steel very well.

The SST (bronze) surface treatment reduces friction between the bit and the workpiece. This facilitates better chip flow and lowers heat buildup, which extends the life of the cutting edge.

Absolutely. In fact, stub drills are often preferred for hand drilling because their shorter length reduces the leverage that causes bits to snap when the operator's hand wobbles.

The SKU 01H020 corresponds to a 5/16 inch diameter drill bit.

A 135-degree point is flatter, which engages more cutting lip with the material sooner. This reduces the thrust required to penetrate hard metals like stainless steel and reduces work hardening.