Home Shop Walter SST+ 29/64″ Drill Bit, 3/8″ Reduced Shank, 135° Split Point
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01R229 - Walter SST+ 29/64" Drill Bit, 3/8" Reduced Shank, 135° Split Point

Packaging: 5 per each
$44.74/ea

Package Price:

$223.70/5 per each

Usually ships within 3-5 business days

SKU: 01R229 Categories: ,

OVERVIEW

Technical Overview of the Walter SST+ 29/64" Drill Bit

The Walter 01R229 is a high-performance engineering tool designed to bridge the gap between portable drill capacity and heavy-duty hole requirements. Part of the renowned SST+ series, this drill bit features a specific 29/64-inch diameter cutting head integrated with a reduced 3/8-inch shank. This configuration allows operators to utilize standard 3/8-inch chuck power drills to create holes that would typically require a larger, heavier 1/2-inch drill motor. This versatility makes it an essential component in maintenance, repair, and operations (MRO) environments where tool portability is critical.

Technically, the bit is manufactured using Walter's proprietary SST+ geometry. This involves a high-speed steel formulation enriched with a cobalt blend, providing the thermal stability necessary to machine high-tensile materials such as stainless steel and other ferrous alloys. The bit is ground to a precise 135° split point. Unlike standard 118° chisel points, the 135° split point engages the material immediately upon contact, effectively eliminating "walking" or skating across the workpiece surface. This self-centering capability significantly improves hole accuracy and reduces the axial force required by the operator, thereby reducing fatigue during repetitive drilling tasks.

The flute design of the 01R229 is optimized for rapid chip evacuation, a critical factor when drilling deep holes in gummy materials like aluminum or work-hardening alloys like stainless steel. The bronze surface treatment further aids in reducing friction coefficient, keeping the cutting edge cooler and extending the tool's service life. Whether utilized in a stationary drill press or a handheld power tool, this bit delivers consistent, round holes with minimal burr formation.

Key Technical Specifications:

  • Diameter: 29/64 inch
  • Shank Configuration: 3/8 inch Reduced Shank
  • Point Geometry: 135° Split Point (Self-Centering)
  • Material Suitability: Stainless Steel, Mild Steel, Aluminum, Non-Ferrous Alloys
Additional Information
Packaging Description:1 per each, 5 per each
Brand:Walter
Used to Cut:Steel or Stainless or Aluminum
Drill Bit Size:29/64"
Shank Size:3/8"
Shank Type:Reduced Shank
Point Angle:135° Split Point
Material Grade:SST+ HSS

INCLUDED

  • 1x Walter SST+ 29/64" Drill Bit with 3/8" Reduced Shank

APPLICATIONS

  • Drilling stainless steel components and panels
  • Creating 29/64" clearance holes for bolts
  • General fabrication in mild steel and aluminum
  • Maintenance and repair tasks using portable 3/8" drills
  • Drilling round surfaces and pipes
  • Automotive and heavy equipment repair

FAQ

A reduced shank allows you to use a drill bit with a larger cutting diameter (in this case, 29/64") in a power drill with a smaller chuck capacity (3/8"). This expands the capabilities of standard portable drills.

Yes, the SST+ line is specifically engineered with a cobalt-blend HSS and heavy-duty geometry to effectively drill through tough materials like stainless steel without work-hardening the metal.

Generally, no. The 135° split point geometry is designed to be self-centering, meaning it bites into the material immediately upon contact and prevents the bit from 'walking' across the surface.

When drilling stainless steel, it is recommended to use a lower RPM (typically around 500-800 RPM for this diameter) and apply consistent, heavy pressure to prevent work hardening. Always consult a speed chart for precise settings.

Yes, using a high-quality cutting lubricant like Walter Coolcut is highly recommended. It reduces friction, dissipates heat, and significantly extends the life of the drill bit, especially in stainless steel.

Yes, while the reduced shank is designed for portable drills, the bit performs exceptionally well in stationary drill presses, offering high stability and precision.

The Walter 01R229 is versatile and suitable for mild steel, stainless steel, non-ferrous metals (like aluminum and copper), and other alloy steels.

SST+ is Walter's trademark for their premium line of drill bits designed for stainless steel and tough alloys, featuring specific flute geometries and material compositions for maximum durability.

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