AB Tools Tap Repair Kit - 1/2" X 12 BSW Whitworth

Professional tool for commercial or occasional use. Ideal for repairing damaged or stripped intern...

Best current price£57.87from B&Q

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B&QB&Q - 1/2" X 12 Bsw Whitworth Tap Repair Cutter Kit Helicoil Damaged Threads 14Pc Kit
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£57.87
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eBay1/2"" x 12 BSW Whitworth Tap Repair Cutter Kit Helicoil Damaged Threads 14pc Kit
Free delivery in 1–3 days
£57.87
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Product Information

Full details

This AB Tools Tap Repair Kit is designed for professionals and DIYers needing to repair damaged or stripped internal threads, specifically in 1/2" x 12 TPI BSW (British Standard Whitworth) applications. Its key benefit is providing a permanent, strong repair in soft materials, protecting tapped threads against future wear and damage. A potential caveat is that it requires precise application for optimal results, as with any thread repair process.

All features

Model Part NumberUN018
BrandAB Tools

Extended Product Information

FAQs

What type of threads does this kit repair?

This kit is specifically designed for 1/2" x 12 TPI BSW (British Standard Whitworth) threads.

Can this kit be used on aluminum and steel?

Yes, this kit is suitable for creating stronger threads in various materials, including softer metals like aluminum and harder ones like steel, where the original threads may have been stripped.

What is a Helicoil insert?

A Helicoil insert is a threaded coil made of high-quality stainless steel wire that creates a stronger, more durable internal thread than the original tapped hole, especially in soft metals.

How do I store the kit after use?

The kit comes in a durable blow-molded case. After cleaning the tools, store them securely in their designated slots within the case for easy organization and protection.

What is the 'lug breaking tool' for?

The lug breaking tool is used to snap off the small tang or lug at the bottom of the Helicoil insert after it has been installed, leaving a flush and clean internal thread.

Is this kit suitable for professional mechanics?

Yes, this kit is described as professional grade and is ideal for both commercial and occasional professional use for repairing damaged threads.

How many repairs can I get from one kit?

The kit includes 10 Helicoil inserts, so you can perform up to 10 repairs on 1/2" x 12 BSW threads, provided no other components are consumed.

Troubleshooting

Insert is difficult to screw in.

Ensure the hole was drilled and tapped correctly with the provided tools. Clean out any debris from the tapped hole.

Tang on the insert does not break off cleanly.

Ensure the lug breaking tool is positioned correctly and apply firm, steady pressure. Avoid excessive force which can damage the insert.

Drill bit is not cutting effectively.

Ensure the drill is rotating at an appropriate speed for the material. The drill bit may be dull and require replacement if used extensively.

Tap is not creating clean threads.

Use a tapping fluid or cutting oil. Ensure the tap is held perfectly straight and is not cross-threaded. Clean tap flutes frequently.

Pros and Cons

Pros

  • Provides a permanent and robust thread repair.
  • Creates stronger threads, especially in softer metals.
  • Includes all essential tools for a complete repair process.
  • Ideal for commercial and occasional professional use.
  • Protects existing and newly tapped threads from damage.

Cons

  • Specific to 1/2" x 12 BSW thread size, not versatile for other sizes.
  • Requires careful and precise application for best results.
  • May be overkill for very minor thread damage.
  • The lug breaking tool requires careful handling to avoid over-stripping.

Setup, Compatibility & Care

Setup:

  1. Ensure the damaged thread area is clean and accessible.
  2. Use the included 13.1mm / 33/64" drill bit to drill out the damaged thread.
  3. Clean the drilled hole thoroughly.
  4. Use the 1/2 x 12 thread tap to re-tap the hole. Be sure to tap straight and to the correct depth.
  5. Clean the tapped hole again.
  6. Screw the Helicoil insert into the installation tool.
  7. Carefully wind the insert into the tapped thread until it is just below the surface. Do not over-tighten.
  8. Use the lug breaking tool to snap off the tang at the bottom of the insert.
  9. Remove any remaining pieces of the tang.

Compatibility: This kit is specifically designed for 1/2" x 12 TPI BSW (British Standard Whitworth) threads. It is not compatible with other thread standards or sizes.

Care:

  • After use, clean all tools with a dry cloth to remove debris.
  • Apply a light coating of oil to the metal tools to prevent rust, especially if storing for extended periods.
  • Store all components back in the original blow-molded case to keep them organized and protected.

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