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Walter #27 Cobalt Stub Drill Bit for Stainless Steel

$5.88/ea $51.70/10 per each only $5.17/eaSave 12%

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OVERVIEW

The Welder's Choice for Tough Metals

Every welder knows the frustration of trying to drill out a spot weld or put a hole in a stainless steel panel, only to have the drill bit snap or dull instantly. The Walter #27 SST Stub Drill (01J027) is engineered to solve exactly that problem. Built for the professional fabricator who demands reliability, this bit is not your average hardware store consumable. It is crafted from a heavy-duty cobalt blend that thrives in the high-heat environment generated when drilling through stainless steel, mild steel, and non-ferrous metals.

Stop Breaking Bits

When you are leaning into a hand drill on a vertical surface or working in a tight space, bit flex is your enemy. Standard length bits bend, chatter, and eventually snap. The Walter SST Stub Drill features a short, robust profile that virtually eliminates flexing. This "stub" design gives you the confidence to apply the necessary pressure to cut through sheet metal quickly without worrying about the bit exploding. It is the perfect tool for drilling out rivets, prepping for fasteners, or creating pilot holes in body panels.

No Walking, Just Drilling

Time is money in the shop. You don't always have time to grab a hammer and center punch for every single hole. The 01J027 features a 135-degree split point tip that bites into the metal the instant it touches the surface. This prevents the dreaded "walking" where the bit skids across the metal, scratching your workpiece. Whether you are drilling into a curved pipe or a flat sheet, this bit stays where you put it.

Ideal for Stainless Steel

Stainless steel work-hardens if you look at it wrong. You need a bit that cuts aggressively and stays sharp. The bronze SST coating on this Walter bit helps shed chips and heat, keeping the cutting edge sharper for longer. If you work with stainless, aluminum, or thin gauge sheet metal, this #27 drill bit is an essential addition to your toolbox.

Additional Information
Brand:Walter Surface Technologies
Item:Drill Bit
Used To Cut:Steel, Stainless Steel & Aluminum
Material:Cobalt Blend
Drill Size:#27, 0.1440"
Drill Type:Stub, Screw Machine Length
Point Angle:135° Split Point
Surface Treatment:Bronze SST
Flute Design:Short Flute
Packaging Description:10 per each

INCLUDED

  • 1 x Walter #27 SST+ Stub Drill Bit

APPLICATIONS

  • Drilling stainless steel and high-tensile alloys
  • Sheet metal fabrication and bodywork
  • Drilling out spot welds and rivets
  • Portable drilling with hand drills
  • Stationary drill press operations
  • Non-ferrous metal drilling (aluminum, copper)

FAQ

A #27 wire gauge drill bit has a diameter of 0.1440 inches (approximately 3.66 mm).

Stub drills (or screw machine length drills) are shorter, which makes them much more rigid. This rigidity prevents flexing and significantly reduces the chance of the bit breaking, especially when using hand drills on hard materials.

Yes, absolutely. The Walter SST+ line is made from a cobalt blend specifically designed to withstand the high heat and abrasion associated with drilling stainless steel.

Generally, no. The 01J027 features a 135° split point which is self-centering, meaning it will start cutting immediately without walking or skating across the surface.

The bronze SST (Super Speed Treatment) is a surface treatment that helps reduce friction between the bit and the workpiece, allowing for cooler drilling and better chip evacuation.

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

While exact dimensions vary by size, stub drills have a significantly shorter flute length than jobber drills, maximizing the web strength and minimizing deflection.
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