Home Shop Walter SST+ #25 Cobalt Stub Drill Bit – 135° Split Point
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01J025 - Walter SST+ #25 Cobalt Stub Drill Bit - 135° Split Point

Packaging: 10 per each
$5.88/ea

Package Price:

$58.80/10 per each

Usually ships within 3-5 business days

SKU: 01J025 Categories: ,

OVERVIEW

Heavy-Duty Drilling Performance with Walter SST+ Stub Drills

The Walter 01J025 #25 SST+ Stub Drill Bit is engineered for the most demanding industrial environments. When precision and durability are non-negotiable, this cobalt-blended drill bit delivers superior results. Designed specifically for drilling through tough materials such as stainless steel, mild steel, and non-ferrous metals, the SST+ series stands out as a top-tier choice for maintenance, repair, and fabrication professionals.

One of the primary challenges in drilling sheet metal and hard alloys is bit breakage. The Walter SST+ addresses this with its stub length design. By shortening the overall length and flute length, the bit maintains maximum rigidity. This structural integrity allows operators to apply the necessary feed pressure without the bit flexing or snapping, a common issue with jobber-length bits in portable drilling applications. The increased rigidity also contributes to more accurate hole sizing and roundness.

Efficiency is key in any workshop. The 135° split point geometry of the 01J025 eliminates the need for center punching. The bit self-centers immediately upon contact, preventing "walking" or skating across the workpiece surface. This feature not only saves time but also protects the finish of your materials. Combined with Walter's exclusive bronze SST surface treatment, which facilitates chip evacuation and reduces heat friction, this drill bit ensures a longer service life and cleaner cuts every time.

Key Industrial Benefits

  • High Heat Resistance: Cobalt blend withstands the high temperatures of drilling stainless steel.
  • Enhanced Rigidity: Short flute design minimizes deflection and breakage.
  • Precision Starts: Self-centering point allows for accurate drilling without pilot holes.
Additional Information
Packaging Description:10 per each, 10 per pack
Brand:Walter
Item:Drill Bit
Used to Cut:Steel or Stainless or Aluminum
Drill Size:#25
Decimal Equivalent:0.1495"
Material:Cobalt Blend (HSS+Co)
Point Angle:135° Split Point
Flute Type:Stub (Short)
Surface Treatment:Bronze SST

INCLUDED

  • 1 x Walter SST+ #25 Cobalt Stub Drill Bit

APPLICATIONS

  • Drilling stainless steel and high-tensile alloys
  • Sheet metal fabrication and bodywork
  • Drilling round surfaces and pipes
  • Portable drilling applications where rigidity is critical
  • Stationary machine drilling
  • General maintenance and repair (MRO)

FAQ

A #25 wire gauge drill bit has a decimal equivalent diameter of 0.1495 inches.

Stub drills have a shorter flute and overall length, which makes them much more rigid. This rigidity prevents flexing and breakage, especially when drilling hard materials or using portable hand drills.

Yes, the Walter SST+ series is made from a cobalt blend specifically designed to withstand the high heat and abrasion generated when drilling stainless steel.

No, the 135° split point geometry allows the bit to self-center immediately on contact, eliminating the need for a center punch and preventing the bit from walking.

The bronze SST surface treatment helps reduce friction between the bit and the material, allowing for cooler drilling temperatures and better chip evacuation.

Yes, the Walter SST+ stub drill is effective on non-ferrous metals like aluminum, as well as mild steel and stainless steel.

SST refers to Walter's 'Super Speed Tip' technology and surface treatment, designed for high-performance drilling.

Yes, the round shank of the #25 bit fits all standard drill chucks found on portable drills and drill presses.

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