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01J011 - Walter SST #11 Cobalt Stub Drill Bit for Stainless Steel

Packaging: 10 per each
$7.26/ea $63.80/10 per each only $6.38/eaSave 12%

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OVERVIEW

Stop Breaking Bits on Stainless Steel

Every welder knows the frustration of snapping a drill bit halfway through a project, especially when working with tough stainless steel or trying to drill out a spot weld. The Walter #11 SST Stub Drill is the solution to that headache. Built with a tough cobalt alloy, this bit is designed to cut through hard metals that burn up standard high-speed steel bits.

The secret to its durability is the "stub" design. By shortening the flutes and the overall length, Walter has created a bit that is incredibly stiff. This rigidity is crucial when you are leaning into a hand drill or working in tight spaces on a vehicle frame or assembly. It doesn't flex, which means it doesn't snap under pressure. It is the perfect choice for drilling rivet holes in sheet metal or prepping surfaces for fabrication.

Featuring a split point tip, this drill bit doesn't "walk" across the metal surface—it starts cutting the second it touches the steel. The special bronze coating helps keep the bit cool, extending its life so you spend less time changing bits and more time welding. Add the Walter #11 SST Stub Drill to your toolbox for a reliable, heavy-duty drilling solution that stands up to the rigors of the welding shop.

Additional Information
Brand:Walter Surface Technologies
Used To Cut:Steel & Stainless Steel, Aluminum
Packaging Description:1 per each
Drill Size:#11
Material:Cobalt Blend
Flute Type:Stub (Short Flute)
Point Type:Split Point
Surface Treatment:Bronze SST
Application:Sheet Metal, Stainless Steel

INCLUDED

  • 1 x Walter #11 SST Stub Drill Bit

APPLICATIONS

  • Drilling stainless steel and high-tensile alloys
  • Sheet metal fabrication and body work
  • Drilling on curved or round surfaces (pipes, tubing)
  • Portable drilling applications where rigidity is key
  • General maintenance and repair on non-ferrous metals
  • High-torque drilling with stationary machines

FAQ

A #11 wire gauge drill bit has a diameter of approximately 0.1910 inches.

Stub drills (or screw machine length drills) are shorter, which makes them much more rigid. This rigidity prevents flexing and breakage, making them ideal for hard materials like stainless steel or for use with hand drills.

Yes, while it is optimized for hard materials like stainless steel, it performs exceptionally well and lasts a very long time when drilling mild steel.

No, the Walter SST Stub Drill features a split point design that is self-centering, allowing it to start drilling immediately without walking, even on round surfaces.

It is made from a high-quality cobalt blend, which provides superior heat resistance and hardness compared to standard High-Speed Steel (HSS).

Yes, the Walter SST Stub Drill is effective on non-ferrous metals like aluminum, though its primary advantage is found in harder metals.

The bronze SST surface treatment helps reduce friction between the bit and the workpiece, which lowers heat buildup and extends the life of the cutting edge.
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