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Walter 3/4-10 NC HSS Bottoming Tap for Blind Holes

$105.42/ea $90.67/1 per each only $90.67/eaSave 14%

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OVERVIEW

Reliable Thread Repair and Fabrication

When you are in the middle of a fabrication job or fixing a critical piece of equipment, a stripped thread or a new hole needs a tool you can trust. The Walter 3/4"-10 NC Bottoming Tap (03B123) is built for the shop environment where durability and reliability are non-negotiable. Made from heavy-duty High-Speed Steel, this tap cuts through metal cleanly and stays sharp, saving you from the frustration of dull tools that bind or break halfway through a job.

This bottoming tap is the problem-solver for blind holes. If you have drilled a hole that doesn't go all the way through a thick plate or casting, a standard taper tap won't cut threads all the way to the bottom. That's where this tool shines. With a chamfer of just 1-2 threads, it cuts full threads right down to the bottom of the hole, ensuring your bolts have maximum grip. It is an essential tool for finishing threads in tight spots or ensuring heavy-duty bolts have the holding power they need.

Walter Surface Technologies is known for making tools that last, and this tap is no exception. It is designed to handle a wide range of metals commonly found in welding and fabrication shops, from soft aluminum to mild steel and even stainless steel. The precision-ground threads ensure that when you run a bolt in, it goes in smooth and holds tight. Whether you are tapping by hand with a wrench or using a machine setup, this HSS tap provides the bite and strength you need to create professional, clean threads every time.

Don't let a stripped thread slow down your production. Keep the Walter 03B123 in your toolbox for those moments when you need to tap a blind hole efficiently and accurately. Its superior heat resistance and hardened structure mean it will be ready to work whenever you are, project after project.

Additional Information
Brand:Walter Surface Technologies
Packaging Description:1 per each
Used To Cut:Steel, Stainless Steel & Aluminum
Thread Size:3/4"-10 NC
Tap Style:Bottoming
Material:High-Speed Steel (HSS)
Thread Standard:UNC
Chamfer Length:1-2 Threads

INCLUDED

  • 1 x Walter 3/4"-10 NC Bottoming High-Speed Steel Tap

APPLICATIONS

  • Blind Hole Threading: Specifically designed to cut threads close to the bottom of non-through holes.
  • Thread Repair: Ideal for chasing and cleaning up damaged or rusty threads in maintenance operations.
  • Fabrication: Essential for creating new internal threads in custom metal parts and assemblies.
  • Multi-Material Use: Effective on aluminum, mild steel, and stainless steel.
  • Machinery Maintenance: Used for re-tapping mounting holes on heavy equipment and industrial machinery.

FAQ

A bottoming tap has a very short chamfer (1-2 threads), allowing it 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.

Yes, this Walter tap is made from High-Speed Steel (HSS), which is hard enough and heat-resistant enough to cut threads in stainless steel effectively.

For a 3/4"-10 NC thread, the standard tap drill size is typically 21/32". Always consult a drill chart to confirm based on the desired thread percentage.

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

Yes, this tap can be used with a tap wrench for hand tapping operations, as well as in machine setups.

NC stands for National Coarse, which refers to the thread pitch standard. 3/4"-10 means the diameter is 3/4 inch and there are 10 threads per inch.

High-Speed Steel (HSS) is superior to carbon steel because it can withstand higher temperatures without losing its hardness. This makes it more durable and capable of cutting harder materials like stainless steel.

While it is possible, bottoming taps are difficult to start straight because they lack a tapered lead-in. It is best practice to start the thread with a taper or plug tap and finish with the bottoming tap.
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