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Walter 7/8-14 NF High Speed Steel Taper Tap

$135.36/ea $116.42/1 per each only $116.42/eaSave 14%

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OVERVIEW

Reliable Thread Creation for Metal Fabrication

Upgrade your threading capabilities with the Walter 7/8-14 NF Taper Tap. When precision counts, relying on inferior cutting tools can lead to broken taps, damaged workpieces, and costly downtime. Walter’s 03B144 is built to withstand the rigors of professional welding and fabrication shops, providing a smooth cutting action that results in high-quality internal threads every time.

This tap is made from industrial-grade High-Speed Steel (HSS), a material chosen for its superior toughness and wear resistance. Unlike standard carbon steel taps that dull quickly, HSS maintains a sharp cutting edge even when working through harder alloys like stainless steel. This durability translates to more holes tapped per tool and less time spent replacing worn-out equipment. The tap features precision-ground flutes that effectively evacuate chips, reducing friction and heat buildup during the threading process.

Versatility in Application

The "Taper" style of this tap makes it the most user-friendly option for starting new threads. With a long chamfer of 7-10 threads, it requires less force to initiate the cut, helping to prevent cross-threading—a common issue when tapping by hand. It is specifically designed for:

  • Creating New Threads: Perfect for drilling and tapping through holes in plate, structural steel, or castings.
  • Thread Repair: Excellent for cleaning up or re-tapping damaged threads in maintenance situations.
  • Material Compatibility: Proven performance on mild steel, stainless steel, and non-ferrous metals like aluminum.

For welders and fabricators, having a reliable 7/8-14 NF tap is essential for custom builds and equipment repairs. The National Fine (NF) thread pitch provides greater strength and finer adjustment capabilities, often required in precision assemblies. Pair this tap with a quality cutting fluid to maximize its lifespan and achieve the smoothest possible thread finish.

Additional Information
Brand:Walter Surface Technologies
Item:Tap
Thread Size:7/8-14 NF
Material:High-Speed Steel (HSS)
Tap Style:Taper
Thread Type:National Fine (NF)
Application:Through Holes, Thread Repair
Packaging Description:1 per each

INCLUDED

  • 1 x Walter 7/8-14 NF Taper HSS Tap
  • Protective packaging

APPLICATIONS

  • Tapping through holes in metal plates and structural components
  • Repairing damaged or stripped 7/8-14 NF threads
  • Maintenance and assembly of heavy machinery
  • Automotive and aerospace fabrication requiring fine threads
  • Metalworking with mild steel, stainless steel, and aluminum

FAQ

For a 7/8-14 NF thread, the recommended drill bit size is typically 51/64 inch to achieve approximately 75% thread height.

A taper tap has a longer chamfer (7-10 threads) which helps in starting the thread straight, making it ideal for through holes. A plug tap has a shorter chamfer (3-5 threads) and is used after a taper tap or for through holes where less starting help is needed.

Yes, this Walter tap is made from High-Speed Steel (HSS), which is durable enough to cut threads in stainless steel, as well as mild steel and aluminum.

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

NF stands for National Fine. It indicates that the thread pitch (14 threads per inch) is finer than the standard coarse thread (UNC) for this diameter.

While it can be used to start a thread in a blind hole, a taper tap cannot thread all the way to the bottom. You would typically follow it with a bottoming tap to finish the threads near the bottom of a blind hole.
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