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03B084 - Walter 1/2-20 UNF High Speed Steel Taper Tap

Packaging: 3 per each
$43.60/ea

Package Price:

$130.80/3 per each

Usually ships within 3-5 business days

SKU: 03B084 Categories: ,

OVERVIEW

Precision Threading with Walter High Speed Steel Taps

The Walter 1/2-20 NF Taper HSS Tap (SKU: 03B084) represents the pinnacle of threading technology for industrial applications. Manufactured by Walter Surface Technologies, a leader in metalworking solutions, this tap is engineered to deliver exceptional accuracy and durability. The core of its performance lies in its construction from premium High Speed Steel (HSS). Unlike carbon steel alternatives, HSS retains its hardness at higher temperatures, allowing for faster cutting speeds and a significantly longer service life, even when machining tough alloys like stainless steel.

One of the standout features of this tool is its precision ground threads. The grinding process ensures that the thread geometry is exact, reducing friction during the cutting action and producing cleaner, more accurate threads in the workpiece. This tap features a "Taper" chamfer, typically characterized by a longer lead of 7 to 10 threads. This design distributes the cutting load across more teeth, making it the ideal choice for starting new threads in a hole. The gradual cutting action helps align the tap perpendicular to the workpiece, reducing the risk of cross-threading or breakage during the initial entry.

Designed for versatility, the Walter 03B084 is capable of handling a wide range of materials, including aluminum, mild steel, and stainless steel. The hardening and tempering process applied to the steel ensures the tool possesses the necessary toughness to resist chipping while maintaining a sharp cutting edge. Whether used for creating new threads in a through-hole application or repairing damaged threads in maintenance operations, this tap delivers consistent, professional results. It is an essential component for any machinist or fabricator seeking reliability and precision in their threading operations.

Additional Information
Packaging Description:3 per each
Brand:Walter
Used to Cut:Steel or Stainless or Aluminum
Tap Size:1/2"
Threads Per Inch:20
Thread Type:NF (National Fine)
Tap Style:Taper
Material:High Speed Steel (HSS)

INCLUDED

  • 1x Walter 1/2-20 NF Taper HSS Tap

APPLICATIONS

  • Cutting new threads in aluminum, mild steel, and stainless steel
  • Repairing damaged or stripped threads in maintenance applications
  • Tapping through-holes in fabrication projects
  • Automotive repair requiring fine thread (NF) specifications
  • General machining and metalworking

FAQ

A taper tap, like this Walter model, has a longer chamfer (7-10 threads) which makes it easier to start threads straight. A plug tap has a shorter chamfer (3-5 threads) and is used after the taper tap or for through holes.

For a 1/2-20 NF thread, the standard drill bit size is 29/64 inch. Using the correct drill size is critical to prevent tap breakage and ensure proper thread percentage.

Yes, this Walter tap is made from High Speed Steel (HSS) and is hardened and tempered, making it suitable for cutting threads in stainless steel as well as mild steel and aluminum.

Yes, using a high-quality cutting fluid or tapping oil is highly recommended. It reduces friction, dissipates heat, and significantly extends the life of the tap while improving thread quality.

NF stands for National Fine. It indicates that the thread pitch (20 threads per inch) is finer than the standard coarse thread (NC) for a 1/2-inch diameter, offering higher strength and finer adjustment.

While it can be used in blind holes, a taper tap requires a deep hole to cut full threads near the bottom. For blind holes, it is often best to start with a taper tap and finish with a bottoming tap.