Home Shop Walter SST+ 9/64″ Stub Drill Bit – 135° Split Point
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01H109 - Walter SST+ 9/64" Stub Drill Bit - 135° Split Point

Packaging: 10 per each
$5.62/ea

Package Price:

$56.20/10 per each

Usually ships within 3-5 business days

SKU: 01H109 Categories: ,

OVERVIEW

High-Performance Drilling for Tough Materials

The Walter 01H109 9/64" SST+ Stub Drill Bit is an industrial-grade cutting tool engineered for professionals who demand precision and durability. Designed specifically for drilling into thin-walled materials, sheet metal, and stainless steel, this bit features Walter's proprietary SST+ (Super Speed Tip) technology. The bit is manufactured from premium High-Speed Steel (HSS) and undergoes a specialized bronze surface treatment. This treatment significantly reduces the coefficient of friction during operation, allowing for cooler drilling temperatures and extended tool life even under rigorous use.

Maximum Rigidity and Precision

One of the defining characteristics of this drill bit is its "stub" or screw machine length. Unlike jobber-length bits, the shorter overall length and flute geometry provide superior rigidity. This structural stiffness virtually eliminates the risk of snapping the bit, a common issue when drilling with smaller diameters in tough alloys. The increased rigidity also allows for higher feed rates and more accurate hole placement, making it an excellent choice for stationary machines and CNC operations where tolerance is critical.

Self-Centering Geometry

Efficiency is paramount in industrial environments, and the 01H109 delivers with its 135° split point geometry. This advanced tip design enables the drill to bite into the material immediately upon contact, effectively preventing "walking" or skating across the surface. This feature removes the necessity for pre-drilling or center punching, saving valuable time during fabrication. It is particularly effective on curved surfaces, such as pipes or tubing, where standard drill bits often struggle to maintain alignment.

Versatile Application Range

While optimized for stainless steel and sheet metal, the Walter SST+ Stub Drill is highly versatile. It performs exceptionally well on mild steel, non-ferrous metals like aluminum, and other alloy steels. Its compact size also makes it an indispensable tool for maintenance and repair operations (MRO) where drilling must be performed in confined spaces with limited clearance. Whether used in a hand drill or a drill press, this bit delivers consistent, burr-free holes with minimal effort.

Additional Information
Packaging Description:10 per each
Brand:Walter
Diameter (in):9/64"
Used to Cut:Steel or Stainless or Aluminum
Point Angle:135° Split Point
Drill Type:Heavy Duty, Stub Drill
Coating:Bronze SST Surface Treatment
Flute Design:Short Flute

INCLUDED

  • 1 x 9/64" SST+ Stub Drill Bit

APPLICATIONS

  • Drilling thin-walled sheet metal
  • Fabrication involving stainless steel and mild steel
  • Automotive body work and frame repair
  • Drilling on curved surfaces like pipes and tubing
  • Confined space drilling applications
  • General MRO and construction tasks

FAQ

Stub drill bits have a shorter flute and overall length, which makes them much more rigid than standard jobber bits. This rigidity prevents flexing and breakage, making them ideal for hard materials and precise hole placement.

Yes, the Walter SST+ line is specifically engineered with a bronze surface treatment and heavy-duty HSS to drill effectively through stainless steel and other hard alloys.

No, the 135° split point design allows the bit to self-center immediately upon contact, eliminating the need for center punching and preventing the bit from walking.

The bronze SST surface treatment helps to reduce friction and heat buildup during drilling, which extends the life of the cutting edge and improves performance in tough metals.

Absolutely. The split point design and shorter length make it very easy to control in portable hand drills, reducing the effort needed to penetrate the material.

This specific drill bit has a diameter of 9/64 inches.

Yes, it works excellently on non-ferrous metals like aluminum, as well as mild steel and stainless steel.

A 135-degree point is flatter and engages more of the cutting edge sooner, which is better for harder materials. It also typically features a split point for self-centering, whereas 118-degree points often require a pilot hole.

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