Home Shop Walter SST+ 3/8-Inch Stub Drill Bit with Quick Shank
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01H124 - Walter SST+ 3/8-Inch Stub Drill Bit with Quick Shank

Packaging: 10 per each
$23.00/ea

Package Price:

$230.00/10 per each

Usually ships within 3-5 business days

SKU: 01H124 Categories: ,

OVERVIEW

Precision Drilling for Confined Spaces and Sheet Metal

The Walter 3/8" SST Stub Drill Bit (01H124) is an industrial-grade cutting tool engineered for machinists and fabricators who demand rigidity and precision. Unlike standard jobber-length bits, this stub drill (also known as screw machine length) features a shorter flute and overall length. This compact design significantly increases the torsional strength of the bit, making it virtually unbreakable under normal operating conditions. It is the tool of choice when drilling into thin-walled materials like sheet metal, where longer bits tend to flex, wander, or chatter.

Advanced Geometry and Surface Treatment

At the tip, the bit boasts a 135° split point geometry. This aggressive angle allows the drill to bite into the material immediately upon contact, effectively eliminating the "walking" phenomenon common with standard 118° points. This self-centering capability means you can often bypass the center-punching step, saving valuable time during production runs. The bit is finished with Walter's proprietary bronze SST surface treatment, which facilitates smoother chip evacuation and reduces heat generation—the primary enemy of cutting tool life.

The Quick Shank Advantage

One of the standout features of the 01H124 is the Quick Shank design. Drilling tough alloys like stainless steel requires significant torque. Standard round shanks often slip inside the drill chuck under heavy load, damaging both the bit and the chuck jaws. The Quick Shank incorporates engineered flats that lock into the chuck, ensuring positive drive transmission and preventing slippage entirely. This feature, combined with the stub length, makes this bit exceptionally efficient for portable drilling applications where stability is key.

Ideal Applications

This bit excels in drilling stainless steel, mild steel, and non-ferrous metals. Its rigidity makes it perfect for drilling out spot welds or creating holes in body panels without the risk of snapping the tool. Whether you are working in a tight engine bay, installing rivets in sheet metal, or operating a stationary drill press, the Walter SST Stub Drill delivers consistent, burr-free holes with superior finish quality.

Additional Information
Packaging Description:10 per each
Brand:Walter
Diameter (in):3/8"
Point Angle:135°
Drill Style:Stub
Shank Type:Quick Shank
Material Application:Mild Steel, Non-Ferrous Metal, Sheet Metal, Stainless Steel
Coating:Bronze SST
Flute Type:Spiral

INCLUDED

  • 1 x Walter 3/8" SST Stub Drill Bit with Quick Shank

APPLICATIONS

  • Drilling thin-walled sheet metal and body panels
  • High-torque drilling in stainless steel and hard alloys
  • Portable drilling in confined spaces or tight corners
  • Drilling out spot welds
  • General fabrication on mild steel and non-ferrous metals
  • Automotive body work and repair
  • HVAC ductwork installation

FAQ

A stub drill, also known as screw machine length, has a shorter flute and overall length compared to a standard jobber drill. This makes the stub drill much more rigid and less prone to breakage, which is ideal for drilling hard materials or using portable drills.

This bit is designed to drill through mild steel, stainless steel, non-ferrous metals (like aluminum and copper), and sheet metal effectively.

Generally, no. The 135° split point geometry is self-centering, which prevents the bit from walking or skating on the surface, allowing you to drill directly without center punching in most applications.

Quick Shank refers to the design of the bit's shank, which typically includes flats. These flats allow the drill chuck to grip the bit more securely, preventing it from spinning inside the chuck during high-torque drilling.

A 135-degree point is flatter than the standard 118-degree point, which allows more of the cutting edge to engage the material sooner. This reduces the thrust required to penetrate hard metals like stainless steel and improves centering.

Yes, while the stub length is excellent for hand drills due to its rigidity, it performs exceptionally well in stationary drill presses for precision work on sheet metal and structural components.

The bronze SST treatment reduces friction between the bit and the workpiece. This helps to lower heat generation, facilitates smoother chip flow, and ultimately extends the life of the cutting edge.

No, stub drills have short flutes and are not designed for deep hole drilling. They are best suited for shallow holes, sheet metal, or drilling into tubing and plate where hole depth does not exceed the flute length.

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