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Tap Extension

#8 (m4) x 5" Tap Extension 101 ANSI series

#8 (m4) x 5" Tap Extension 101 ANSI series

Regular price $49.09 USD
Regular price Sale price $49.09 USD
Sale Sold out
Shipping calculated at checkout.
Tap Extension Diagram

Self-Locking feature requires Tap Square and Shank match max accepted dims.  See Detailed Size chart for all dimensions.  Metric (m) size is conversion.

0.168 – B Max Tap Shank Accepted

0.131 – C Max Tap Square Accepted

Made in USA with USA sourced steel.  

  • Easily extends the reach of standard thread taps.
  • No collet or set screws.
  • Reusable.  
  • For all machine and hand tapping applications.
  • Extension offers smallest OD in the industry. 

Metric (m) size is conversion.  Verify the Tap mfg specs or measure Tap square and shank to assure Tap will seat with extension. 

Only the custom drift included can dislodge the Tap from the extension.

Buy now or contact your favorite Tool Distributor or search our Roster of Authorized Distributors and Resellers.

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If your favorite tool distributor is not on our roster, just ask them to contact us and we can process with a credit card and ship direct same-day by 1pm Pacific time zone or buy online.


✔️ Important: Match the ANSI (metric conversion) or NPT Tap and Extension dimension for the square and shank.

✔️ Line up the Tap square corners with the extension inner marks.

✔️ Tap the square of the extension with a brass or lead hammer or or block to seat the tap firmly.

✔️ Tap square should be slightly visible but not covering the slot window.

✔️Only the drift provided can dislodge the Tap from the Extension. Insert the drift into the slot and move in an up and downward motion or tap drift through with a hammer or block.

View demo video on YouTube.


Ship Same-Day by 1:00pm Pacific Time Zone.