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

Packaging: 10 per each
$7.26/ea

Package Price:

$72.60/10 per each

Usually ships within 3-5 business days

SKU: 01J011 Categories: ,

OVERVIEW

High-Performance Cobalt Drilling for Tough Alloys

The Walter #11 SST Stub Drill (SKU: 01J011) is engineered for industrial professionals who demand precision and durability when working with hard materials. Designed specifically for the challenges of drilling sheet metal and stainless steel, this bit features a heavy-duty cobalt blend construction that withstands the high temperatures generated during aggressive drilling operations.

Unlike standard jobber-length bits, the SST Stub Drill utilizes a screw machine length (stub) geometry. This shorter profile provides superior rigidity, virtually eliminating the flexing and vibration that lead to premature breakage. The increased stability allows for higher feed rates and more accurate holes, particularly in thin-gauge materials where bit wandering is a common issue.

The bit is finished with Walter's proprietary bronze SST surface treatment, which acts as a lubricant to reduce friction and facilitate chip evacuation. Combined with a self-centering split point, this tool bites into the material immediately upon contact, ensuring precise hole placement without the need for a center punch. Whether used in a stationary drill press or a portable hand drill, the Walter SST Stub Drill delivers consistent, professional results in the most demanding MRO environments.

Additional Information
Packaging Description:1 per each, 10 per each
Brand:Walter
Used to Cut:Steel or Stainless, Aluminum
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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