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The ACCUPRO QA-2 #8 is a quick-change tapping adapter designed to hold No. 8 taps in No. 2 adapter-size tooling systems. It connects a tapping head or tapping attachment to the tap shank, transmitting torque during threading operations on drill presses, CNC machining centers, and tapping machines. The adapter features a tap shank diameter of 0.168 inches and a tap square size of 0.131 inches, securing the tap firmly during the cut. A projection of 0.2756 inches and a tap depth of 0.6693 inches define the working geometry. Machinists and tool-and-die professionals install this adapter as part of a WE 2 series quick-change tapping system.
This adapter is suited for production and job-shop environments where repeatable thread quality and fast tap changes are required. It fits applications where No. 8 taps are used to thread ferrous and non-ferrous workpieces. The quick-change feature allows tap swaps without fully disassembling the tapping head setup, reducing downtime on high-volume threading runs. No coolant-through capability is present, making it appropriate for standard flood-coolant or dry-tapping setups where internal coolant delivery is not required.
Designed for use with WE 2 series quick-change tapping systems accepting a No. 2 adapter size. Compatible with No. 8 tap shanks measuring 0.168 inches in diameter with a 0.131-inch square drive.
Installation is performed by machinists or toolroom technicians. Ensure the tapping head or machine spindle is fully stopped and de-energized before inserting or removing the adapter. Verify that the tap shank seats fully into the adapter bore and that the square drive is fully engaged before beginning a threading cycle. Follow machine tool manufacturer guidelines and applicable shop safety procedures when setting up tapping attachments.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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