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The CDI QYD16A is a square-drive interchangeable head designed for use with compatible CDI torque wrenches. The head accepts a 1/2 inch drive and supports a maximum torque of 240 ft-lb, making it suitable for heavy fastening tasks in mechanical, HVAC, and industrial service applications. The interchangeable design allows technicians to swap head types across a single torque wrench handle, reducing tool inventory while maintaining calibrated torque output. This head is installed by mechanics and service technicians who work with torque-critical fasteners on equipment, piping assemblies, and structural connections.
This interchangeable head is intended for use with CDI torque wrench handles in trade and industrial service environments. Typical applications include bolting flanges, securing refrigerant line fittings, tightening mechanical equipment mounts, and any fastening task requiring verified torque in the 240 ft-lb range. The square head style is well-suited to standard socket drive accessories commonly found in trade toolkits.
Designed for use with 200NMIMH, 150MFIMHSS, 250NFIMHSS, 100T-I, and 200T-I CDI torque wrenches.
This head is installed by qualified mechanics or service technicians using standard CDI interchangeable head torque wrench handles. Verify the head is fully seated and locked onto the wrench handle before applying torque. Do not exceed the 240 ft-lb maximum torque rating. Consult applicable equipment service documentation and relevant fastener specifications before use.
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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