CDI Corp
CDI QYD16A Torque Wrench Head Ratchet 16
Interchangeable torque wrench head with 1/2 inch drive and 9/16 inch Y size, made from alloy steel
- Interchangeable head fits multiple torque wrenches
- Ratchet square drive enables quick socket changes
- 16 model designation identifies this specific head
- Alloy steel construction withstands high torque loads
- Compact 3 1/2 inch length suits tight spaces
CDI QYD16A Interchangeable Head
The CDI QYD16A is an interchangeable torque wrench head designed for mechanics and technicians who need a ratchet attachment. It accepts a 1/2 inch square drive and uses a Y size 9/16 inch shank to connect with compatible CDI torque wrench bodies. This tool suits professionals building a modular torque system for precise fastener tightening in automotive or industrial settings. It is not for users who require a complete torque wrench with an integrated handle and scale.
Alloy Steel Construction
The head is manufactured from alloy steel for strength and durability under repeated loading. The ratchet mechanism allows continuous turning in tight spaces without removing the tool from the fastener. The 3 1/2 inch overall length keeps the profile compact for access in confined engine bays or machinery. The Y shank interface locks securely into the wrench body, ensuring accurate torque transfer during each use.
Modular System Component
This head functions as a single component within the CDI interchangeable head system, letting users swap drive sizes or head styles without buying multiple full wrenches. The ratchet head replaces fixed ratchet or open-end heads when a project demands faster socket changes. No additional accessories or calibration software are included; the head relies on the torque wrench body for measurement and setting.
Highlights
- Interchangeable head fits multiple torque wrenches
- Ratchet square drive enables quick socket changes
- 16 model designation identifies this specific head
- Alloy steel construction withstands high torque loads
- Compact 3 1/2 inch length suits tight spaces
Specifications
| Brand | CDI |
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Questions about this item
What does the Y drive size mean for socket compatibility?
The Y drive size corresponds to a 9/16 inch square drive, so it accepts sockets with that matching drive size.
What clearance is needed to mount this head on a compatible handle?
The overall length is 3 1/2 inches, so the handle must provide at least that much space for the head to attach fully.
How do you secure the head to the torque wrench handle?
Align the head's Y drive with the handle's receiver and lock it in place using the handle's retaining pin or locking mechanism.
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