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03B095 - 9/16-18 NF HSS Plug Tap for Steel and Stainless

Packaging: 1 per each
$64.30/ea

Usually ships within 3-5 business days

SKU: 03B095 Categories: ,

OVERVIEW

Precision Threading with High Speed Steel

The Walter 03B095 9/16-18 NF Plug Tap is an industrial-grade threading tool designed for professionals who demand accuracy and longevity. Manufactured from premium High Speed Steel (HSS), this tap is engineered to withstand the high temperatures and stresses associated with cutting threads in tough materials like stainless steel and mild steel. Unlike standard carbon steel taps, HSS maintains its hardness at higher temperatures, ensuring a longer service life and consistent thread quality over hundreds of cycles.

This specific tool features a "Plug" chamfer style, which is the most common general-purpose chamfer. With a tapered entry of 3 to 5 threads, it allows for easier starting in the hole compared to a bottoming tap, while still being capable of threading relatively close to the bottom of a blind hole if necessary, though it excels in through-hole applications. The threads are precision ground, not cut, which provides a smoother finish and tighter tolerances, reducing the friction during the tapping process and minimizing the torque required to drive the tool.

The 9/16-18 NF specification indicates a National Fine thread profile. Fine threads are often preferred in automotive and aerospace applications for their greater tensile strength and resistance to vibrating loose compared to coarse threads. This Walter tap is designed to cut these fine threads cleanly, ensuring a perfect fit for bolts and fasteners. Whether used in a hand tap wrench or a machine setup, the Walter 03B095 delivers the reliability expected from a leader in surface technologies and cutting tools.

Key Technical Specifications:

  • Material: High Speed Steel (HSS)
  • Thread Size: 9/16-18
  • Thread Standard: NF (National Fine)
  • Chamfer Type: Plug (3-5 threads)
  • Finish: Bright/Uncoated
Additional Information
Packaging Description:1 per each
Brand:Walter
Size (in):9/16"
Thread Type:NF (National Fine)
Material:High Speed Steel (HSS)
Tap Style:Plug
Thread Pitch:18 TPI
Chamfer Length:3-5 Threads
Application Material:Aluminum, Mild Steel, Stainless Steel

INCLUDED

  • 1 x 9/16-18 NF High Speed Steel Plug Tap
  • Protective packaging

APPLICATIONS

  • Thread cutting in mild steel
  • Stainless steel fabrication
  • Aluminum machining
  • Automotive thread repair
  • Through-hole tapping
  • Maintenance and Repair Operations (MRO)

FAQ

For a 9/16-18 NF thread, the standard tap drill size is typically 33/64 inch (0.5156"). This provides approximately 75% thread engagement, which is standard for most applications.

A Plug tap has a chamfer of 3-5 threads, making it a general-purpose tap suitable for through holes. A Taper tap has a longer chamfer (7-10 threads) which makes it easier to start but requires more depth to cut full threads.

Yes, High Speed Steel (HSS) is suitable for tapping stainless steel. It is recommended to use a quality cutting fluid or tapping paste to reduce heat and friction when working with stainless.

NF stands for National Fine. It refers to the thread series. Fine threads have more threads per inch (18 TPI in this case) compared to Coarse (NC) threads, offering higher tensile strength and better resistance to vibration.

A Plug tap can be used for blind holes if you do not need threads all the way to the very bottom. For threading to the bottom of a blind hole, a Bottoming tap is usually required after starting with a Plug or Taper tap.

Yes, you will need a tap wrench or T-handle that can accommodate the square drive of a 9/16" tap. Ensure the wrench provides enough leverage for the material you are cutting.

Ground threads are manufactured to tighter tolerances and have a smoother surface finish. This reduces friction during tapping and ensures the resulting threads are more precise and consistent.

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