Home Shop Walter 7/16-20 NF High-Speed Steel Plug Tap
Awaiting product image

03B075 - Walter 7/16-20 NF High-Speed Steel Plug Tap

Packaging: 3 per each
$37.24/ea

Package Price:

$111.72/3 per each

Usually ships within 3-5 business days

SKU: 03B075 Categories: ,

OVERVIEW

Precision Threading with Walter High-Speed Steel Taps

The Walter 03B075 is a premium-grade 7/16-20 NF (National Fine) Plug Tap designed to meet the rigorous demands of industrial maintenance, repair, and operations (MRO). Engineered by Walter Surface Technologies, a leader in metalworking solutions, this tool is crafted from top-quality High-Speed Steel (HSS). Unlike standard carbon steel taps that may dull quickly under thermal stress, HSS retains its hardness at higher temperatures, allowing for faster cutting speeds and a significantly longer service life. This makes it an essential component for machine shops and manufacturing facilities where efficiency and precision are paramount.

The "Plug" style chamfer is the most commonly used tap configuration, featuring a taper over 3 to 5 threads. This design strikes a perfect balance, making it aggressive enough to start threads easily while still being capable of threading close to the bottom of a blind hole (though a bottoming tap would be required for full depth). The 03B075 is specifically ground to precision tolerances, ensuring that every thread cut is clean, accurate, and consistent. This precision reduces the friction generated during the cutting process, which in turn minimizes the risk of tap breakage—a common and costly issue in metalworking.

Versatility is a key strength of this Walter tap. It is engineered to perform exceptionally well across a broad range of materials, including aluminum, mild steel, and stainless steel. Whether you are cutting new threads in a fresh fabrication or repairing damaged threads in an existing assembly, the 03B075 delivers reliable results. The hardened and tempered structure ensures the tool can withstand the torque required for cutting tough alloys without chipping or deforming. For professionals seeking a dependable threading solution that reduces downtime and tool replacement costs, the Walter 7/16-20 NF Plug Tap is the superior choice.

Proper usage involves ensuring the hole is drilled to the correct size before tapping and using appropriate cutting fluids to further extend tool life and improve thread finish. This tap is suitable for use in both hand tap wrenches and machine tool holders, providing flexibility for various operational setups.

Additional Information
Packaging Description:1 per each, 3 per each
Brand:Walter
Thread Size:7/16-20 NF
Material:High-Speed Steel (HSS)
Tap Style:Plug
Used to Cut:Steel or Stainless or Aluminum

INCLUDED

  • 1 x Walter 7/16-20 NF Plug HSS Tap
  • Protective packaging

APPLICATIONS

  • Creating new 7/16-20 NF threads in drilled holes
  • Repairing or cleaning damaged threads in maintenance applications
  • Machining through-holes in metal plates and castings
  • Fabrication involving mild steel, stainless steel, and aluminum
  • Automotive and machinery repair requiring fine thread specifications

FAQ

A plug tap typically has a chamfer of 3-5 threads, making it suitable for through holes and general use. A taper tap has a longer chamfer (7-10 threads) to help start the thread easier, while a bottoming tap has very little chamfer (1-2 threads) to thread to the bottom of a blind hole.

This tap is manufactured from High-Speed Steel (HSS), which offers superior hardness and heat resistance compared to standard carbon steel taps.

Yes, the Walter 03B075 is designed to cut threads in stainless steel, as well as mild steel and aluminum, thanks to its durable HSS construction.

7/16 refers to the major diameter of the thread in inches. 20 refers to the number of threads per inch. NF stands for National Fine, indicating a finer thread pitch compared to coarse (NC) threads.

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

It can be used for blind holes, but because it is a plug tap with a 3-5 thread chamfer, it will not create full threads all the way to the very bottom of the hole. A bottoming tap would be needed to finish the threads at the bottom.

For a 7/16-20 NF thread, the standard drill bit size is typically 25/64 inch. Always consult a drill and tap chart for the specific percentage of thread engagement required for your application.

Ground threads are manufactured to tighter tolerances and are generally sharper and smoother than cut threads. This results in more accurate threading and less torque required to turn the tap.

Related products