Skip to Main Content
Canadian
Canadian owned and operated

01H021 - Walter 21/64 Sst Stub Drill

Packaging: 10 per each
$17.20/ea $151.00/10 per each only $15.10/eaSave 12%

Usually ships within 3-5 business days

OVERVIEW

Precision Drilling for Fabrication and Auto Body

Fabricators and welders know that drilling through sheet metal and stainless steel requires a bit that won't snap under pressure. The Walter 21/64" SST Stub Drill (01H021) is designed exactly for these challenges. Its "stub" length profile makes it incredibly sturdy, minimizing the flex that leads to breakage in standard length bits. This makes it an essential tool for automotive body work, HVAC installation, and general metal fabrication where drilling into thin-walled materials is a daily task.

Time is money in the shop, and the SST Stub Drill saves both. The advanced 135° split point tip allows you to drill directly into your workpiece without wasting time grabbing a center punch. It penetrates quickly and cleanly, leaving minimal burrs that would otherwise require secondary finishing. This self-centering action is perfect for drilling out spot welds or creating rivet holes in sheet metal panels.

Durability is key when working with stainless steel. The Walter SST series utilizes a special bronze surface treatment that resists heat buildup—the number one killer of drill bits. This ensures that your cutting edge stays sharp longer, allowing you to drill more holes per bit. Compact enough to fit into tight spaces inside machinery or vehicle frames, this 21/64" drill bit is a versatile problem-solver for any professional welder's toolbox.

Additional Information
Brand:Walter Surface Technologies
Diameter:21/64"
Used To Cut:Steel, Stainless Steel & Aluminum
Point Angle:135° Split Point
Drill Style:Stub Length (Screw Machine)
Surface Treatment:Bronze SST
Flute Design:Short Flute
Shank Type:Round
Packaging Description:10 per each

INCLUDED

  • 1x 21/64" SST Stub Drill Bit

APPLICATIONS

  • Drilling stainless steel and high-tensile alloys
  • Sheet metal fabrication and auto body work
  • Drilling into thin-walled tubing and pipes
  • Applications requiring high rigidity to prevent bit breakage
  • Confined spaces where standard drills are too long
  • General maintenance and repair on ferrous and non-ferrous metals

FAQ

Stub drills (or screw machine drills) are shorter, which makes them much more rigid. This rigidity prevents flexing and breakage, especially when drilling hard materials or using hand drills.

No, the 135° split point is self-centering and will not walk, allowing you to drill directly without a center punch.

Yes, the Walter SST line is specifically designed with a bronze surface treatment and geometry ideal for drilling stainless steel and other tough alloys.

This specific bit (01H021) has a diameter of 21/64 inches.

Absolutely. The short length makes it very stable and less prone to snapping, which is ideal for hand-held drilling operations.

It is effective on mild steel, stainless steel, non-ferrous metals, and aluminum.