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01J029 - Walter SST+ #29 Cobalt Stub Drill Bit for Stainless Steel

Packaging: 10 per each
$4.88/ea

Package Price:

$48.80/10 per each

Usually ships within 3-5 business days

SKU: 01J029 Categories: ,

OVERVIEW

Heavy-Duty Drilling Performance for Tough Materials

The Walter SST+ Stub Drill Bit #29 (01J029) is engineered to solve the common frustrations associated with drilling hard metals and thin gauge sheets. Known for its exceptional durability, this drill bit features a premium cobalt blend construction that withstands high temperatures and stress, making it the superior choice for drilling stainless steel, mild steel, and non-ferrous metals. Unlike standard jobber length bits, the stub (or screw machine) length provides maximum rigidity, significantly reducing the risk of snapping or breaking under pressure.

Precision and Speed

Accuracy is paramount in professional fabrication, and the Walter SST+ delivers with its advanced split point design. This geometry allows the bit to self-center immediately upon contact with the workpiece, eliminating the "walking" or skating effect often seen with standard bits. This feature removes the need for pre-punching, saving you time and effort on every hole. The specialized bronze SST surface treatment further enhances performance by reducing friction and promoting efficient chip evacuation, ensuring a cleaner hole and cooler operation.

Optimized for Sheet Metal

While versatile enough for various applications, this stub drill excels in sheet metal work. The short flutes and overall compact length offer the stability needed when drilling through thin walls or round surfaces where vibration can be an issue. Whether you are using a portable hand drill in the field or a stationary machine in the shop, the Walter 01J029 provides the consistency and longevity required for industrial maintenance, repair, and fabrication tasks.

Key Features

  • Cobalt Blend: Extended tool life in hard materials like stainless steel.
  • Stub Length: Short design resists breakage and handles higher feed pressure.
  • Split Point: Starts drilling on contact without wandering.
  • Bronze Finish: Reduces heat buildup and improves lubricity.
Additional Information
Packaging Description:10 per each
Brand:Walter
Item:Drill Bit
Used to Cut:Steel or Stainless or Aluminum
Drill Size:#29
Decimal Equivalent:0.1360"
Drill Style:Stub (Screw Machine Length)
Material:Cobalt Blend HSS
Point Type:Split Point
Surface Treatment:Bronze SST

INCLUDED

  • 1 x Walter SST+ #29 Stub Drill Bit

APPLICATIONS

  • Drilling stainless steel and high-tensile alloys
  • Sheet metal fabrication and bodywork
  • Drilling into round surfaces and pipes
  • Portable drilling applications requiring high rigidity
  • General maintenance and repair on ferrous and non-ferrous metals

FAQ

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

The Walter 01J029 is made from a premium cobalt blend (HSS-Co). This material provides excellent heat resistance and hardness, allowing it to maintain a sharp cutting edge longer than standard high-speed steel, especially when drilling stainless steel.

No, the Walter SST+ stub drill features a self-centering split point geometry. This allows the bit to penetrate the material immediately upon contact without 'walking' or skating, eliminating the need for a center punch in most applications.

A #29 wire gauge drill bit has a decimal equivalent diameter of 0.1360 inches.

Yes, the Walter SST+ cobalt blend is specifically designed for drilling tough metals, including stainless steel. Its heat resistance and robust design make it an excellent choice for this application.

The bronze SST surface treatment helps to reduce friction between the bit and the workpiece. It also facilitates better chip flow, which helps keep the bit cooler and prevents binding during drilling.

Yes, the stub length design is particularly well-suited for portable hand drills because the shorter length reduces the leverage that causes bits to snap if the drill is tilted during operation.

Stub drills are widely used in automotive body repair, HVAC, sheet metal fabrication, and industrial maintenance where drilling through thin gauge materials or into tight spaces is common.

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