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03B166 - Walter 1 Inch 12 NF HSS Bottoming Tap for Blind Holes

Packaging: 1 per each
$214.76/ea

Usually ships within 3-5 business days

SKU: 03B166 Categories: ,

OVERVIEW

Precision Threading with Walter HSS Bottoming Taps

The Walter 03B166 is a premium-grade 1-12 NF Bottoming Tap designed for industrial professionals who demand accuracy and durability. Crafted from top-quality High Speed Steel (HSS), this tool is engineered to withstand the rigors of cutting threads in hard metals like stainless steel and mild steel, as well as softer materials like aluminum. The "Bottoming" style is specifically characterized by its short chamfer length, typically only 1 to 2 threads, making it the essential choice for threading blind holes where the thread must extend as close to the bottom of the hole as possible.

Unlike taper or plug taps, which have longer lead-ins to help start the thread, a bottoming tap is usually used as the final step in the tapping process to finish the threads to the required depth. Walter has manufactured this tap with precision-ground threads that reduce friction and torque requirements, ensuring a clean, smooth cut every time. The hardening and tempering process applied to the steel enhances its resistance to wear and breakage, providing a long service life even in demanding production environments.

Whether you are repairing damaged threads in a critical component or fabricating new parts that require fine threads (NF), this 1-inch tap delivers consistent performance. Its ability to maintain sharpness reduces the risk of galling and ensures that your fasteners fit perfectly. Trust Walter's reputation for excellence in cutting tools to improve your workshop's efficiency and output quality.

Key Applications

  • Blind Hole Tapping: Perfect for finishing threads near the bottom of non-through holes.
  • Maintenance & Repair: Ideal for cleaning up or re-cutting damaged 1-12 NF threads.
  • Fabrication: Suitable for machining custom parts in steel, stainless, and aluminum.
Additional Information
Packaging Description:1 per each
Brand:Walter
Item:Tap
Used to Cut:Steel or Stainless or Aluminum
Thread Size:1-12 NF
Tap Style:Bottoming
Material:High Speed Steel (HSS)
Thread Standard:National Fine (NF)
Chamfer Length:1-2 Threads

INCLUDED

  • 1 x Walter 1-12 NF Bottoming High Speed Steel Tap
  • Protective packaging

APPLICATIONS

  • Threading blind holes in machinery components
  • Repairing stripped 1-12 NF threads
  • Fabrication of custom metal parts
  • Automotive and heavy equipment maintenance
  • Industrial manufacturing using stainless steel or aluminum

FAQ

A bottoming tap has a very short chamfer (1-2 threads) and is used to thread close to the bottom of a blind hole. A plug tap has a longer chamfer (3-5 threads) and is easier to start but cannot thread as deep into a blind hole.

It is difficult to start a new thread with a bottoming tap because it lacks a tapered lead-in. It is best practice to start the hole with a taper or plug tap and finish it with this bottoming tap.

This High Speed Steel (HSS) tap is designed for use on aluminum, mild steel, and stainless steel.

It indicates the tap size and thread pitch: 1 inch in diameter with 12 threads per inch, following the National Fine (NF) standard.

Yes, it can be used for through holes, but it is specifically designed for blind holes. For through holes, a spiral point tap might be more efficient at clearing chips.

Yes, using a high-quality tapping fluid or cutting oil is highly recommended to reduce friction, dissipate heat, and extend the life of the tap.

High Speed Steel (HSS) is harder and more heat-resistant than carbon steel, allowing it to cut tougher materials like stainless steel and last significantly longer.

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