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01J003 - Walter # 3 Sst Stub Drill

Packaging: 10 per each
$8.54/ea $74.80/10 per each only $7.48/eaSave 12%

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OVERVIEW

Stop Breaking Bits with Walter SST Stub Drills

Every welder and fabricator knows the frustration of snapping a drill bit halfway through a job, especially when working with hard materials like stainless steel or thin sheet metal. The Walter #3 SST Stub Drill Bit is the solution to that problem. Designed with the real-world needs of welders in mind, this bit features a "stub" length profile. By shortening the flute and overall length, Walter has created a bit that is incredibly rigid and resistant to bending. This means you can lean into your hand drill with confidence, applying the pressure needed to cut through tough steel without the bit flexing and snapping off.

Beyond its durability, this bit is built for speed and precision. It features a 135-degree split point tip that bites into the metal the instant it touches the surface. This "non-slip" starting capability is a game-changer when drilling into round tubing, pipe, or slick sheet metal, as it prevents the bit from wandering and damaging the finish. You won't even need a center punch for most applications. The cobalt blend material is specifically formulated to handle the high heat generated when drilling stainless steel, ensuring the cutting edges stay sharp long after standard bits have dulled.

Whether you are drilling out spot welds on an auto body repair, installing rivets, or fabricating custom brackets, the Walter SST Stub Drill is the reliable partner you need in your toolbox. Its bronze surface treatment helps clear chips smoothly, keeping the bit cool and cutting freely. Upgrade your drilling arsenal with a bit that works as hard as you do and stop wasting money on replacements that can't handle the heat.

Why Welders Choose Walter SST

  • Unmatched Durability: The short, stout design resists breakage, saving you money and frustration.
  • Starts on Contact: The split point tip prevents walking, perfect for drilling pipe and tubing.
  • Cuts Hard Metals: Cobalt formula powers through stainless steel and hardened alloys.
  • Perfect for Sheet Metal: Short flutes provide stability for clean, round holes in thin gauge materials.
  • Portable Drill Friendly: Designed to withstand the instability of hand-held drilling.
Additional Information
Brand:Walter Surface Technologies
Product Type:Stub Drill Bit
Material:Cobalt Blend
Size:#3 Wire Gauge
Used To Cut:Steel, Stainless Steel & Aluminum
Point Angle:135° Split Point
Surface Treatment:Bronze SST
Flute Type:Short Flute
Drill Style:Stub Length (Screw Machine)
Diameter (Decimal Inch):0.2130"
Packaging Description:10 per each

INCLUDED

  • 1 x Walter SST+ Stub Drill Bit (Size #3)

APPLICATIONS

  • Drilling stainless steel components and panels
  • Sheet metal fabrication and auto body work
  • Drilling out spot welds
  • General fabrication with mild steel and non-ferrous metals
  • Portable drilling applications requiring high rigidity
  • Drilling on curved surfaces like pipes and tubing

FAQ

A stub drill (or screw machine drill) has a shorter overall length and shorter flutes compared to a standard jobber drill. This makes the stub drill much more rigid, reducing the chance of breakage and improving accuracy, especially in portable drilling.

Yes, the Walter SST drill bit is specifically designed with a cobalt blend to withstand the high heat and work-hardening properties of stainless steel.

The #3 wire gauge drill bit has a diameter of approximately 0.2130 inches.

Generally, no. The 135° split point design allows the bit to self-center and start drilling immediately without walking, eliminating the need for a center punch in most cases.

The Bronze SST surface treatment helps to reduce friction between the bit and the workpiece, which lowers heat buildup and facilitates smoother chip evacuation.

Absolutely. The stub length design is actually preferred for hand drills because the increased rigidity compensates for the natural wobbling of manual drilling, preventing the bit from snapping.

It is effective on mild steel, stainless steel, non-ferrous metals (like aluminum and copper), and sheet metal.

Cobalt increases the 'red hardness' of the steel, meaning the bit retains its hardness and cutting edge even at the high temperatures generated when drilling tough metals.