Home Shop Walter 27/64″ Heavy-Duty Stub Drill for Stainless Steel
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01H027 - Walter 27/64" Heavy-Duty Stub Drill for Stainless Steel

Packaging: 5 per each
$28.94/ea

Package Price:

$144.70/5 per each

Usually ships within 3-5 business days

SKU: 01H027 Categories: ,

OVERVIEW

Industrial-Grade Precision with Walter SST Stub Drills

The Walter 01H027 27/64" SST Stub Drill is an engineered solution designed to overcome the common failure modes associated with standard length drill bits in industrial environments. Known technically as screw machine length drills, these stub bits offer a significantly shorter flute and overall length compared to standard jobber bits. This reduction in length translates directly to increased torsional rigidity. In MRO and fabrication settings, rigidity is paramount when drilling through tough alloys like stainless steel or when working with hand-held power tools where off-axis pressure can easily snap a longer bit.

This specific drill features Walter’s proprietary bronze SST surface treatment. This treatment is not merely cosmetic; it serves a functional purpose by reducing the coefficient of friction between the tool and the workpiece. Lower friction means less heat generation, which is the primary enemy of cutting tool life, especially in work-hardening materials like austenitic stainless steel. The bit is ground with a 135° split point geometry. Unlike standard 118° chisel points that require significant thrust to start cutting and often wander (walk) on the surface, the 135° split point begins cutting immediately upon contact. This self-centering action eliminates the mandatory need for center punching, streamlining the workflow in high-volume sheet metal operations.

The 01H027 is particularly effective for drilling thin-walled materials and sheet metal. The shorter flute length minimizes the "corkscrewing" effect often seen when a drill breaks through the backside of thin material. Furthermore, the robust web construction allows operators to apply higher feed rates without compromising the structural integrity of the bit. Whether utilized in a stationary drill press for precision work or a portable hand drill for on-site repairs, this tool delivers consistent hole quality and exceptional durability.

Key Technical Benefits:

  • Enhanced Rigidity: Short overall length reduces deflection and breakage.
  • Heat Management: Bronze SST treatment aids in chip flow and heat dissipation.
  • Precision Starting: 135° split point prevents walking on curved or flat surfaces.
Additional Information
Packaging Description:5 per each
Brand:Walter
Diameter (in):27/64"
Point Angle:135°
Drill Style:Stub Length
Material Application:Mild Steel, Non-Ferrous Metal, Sheet Metal, Stainless Steel
Surface Treatment:Bronze SST
Shank Type:Round
Flute Type:Spiral

INCLUDED

  • 1 x Walter 27/64" SST Stub Drill Bit

APPLICATIONS

  • Drilling stainless steel assemblies
  • Sheet metal fabrication and rivet removal
  • Automotive body work and chassis repair
  • Drilling on curved surfaces or pipes
  • Confined space drilling maintenance
  • General MRO in heavy industry

FAQ

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

Generally, no. The 01H027 features a 135° split point which is self-centering. It is designed to penetrate the material immediately upon contact without 'walking', eliminating the need for a center punch in most applications.

Yes, the Walter SST Stub Drill is specifically engineered for high-tensile materials like stainless steel. The bronze SST surface treatment and heavy-duty web construction help manage the heat and stress associated with drilling stainless.

The special bronze SST surface treatment reduces friction between the bit and the workpiece. This helps to lower drilling temperatures, prevents chip welding, and extends the overall life of the tool.

Yes, it can drill non-ferrous metals like aluminum effectively. However, because it is designed for harder metals, you should ensure you clear chips frequently to prevent clogging the flutes when working with soft, gummy aluminum.

A 135-degree point is flatter, which engages more cutting lip with the material sooner. This reduces the thrust load required to penetrate hard metals and provides better centering stability than the sharper 118-degree point.

Yes, the 01H027 has a round shank that fits standard 3-jaw chucks found on most cordless and corded power drills.

27/64 inches is approximately 10.72 mm.

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