Dewalt DCF964B 3/4 Inch High Torque Impact Wrench 20V

Product Description

The DEWALT DCF964B is a 20V MAX XR 3/4 inch high torque impact wrench designed for demanding fastening applications in industrial, construction, and mechanical service environments. The tool delivers high maximum torque output, making it well suited for heavy-duty bolted connections where under-powered tools fall short. Its glass-filled nylon housing resists damage from oils and solvents commonly encountered on job sites. The DCF964B ships as a bare tool — battery and charger are sold separately, keeping it compatible with existing 20V MAX battery platforms. Licensed electricians, pipefitters, ironworkers, and mechanical contractors are the primary users of this class of tool.

The DCF964B fits applications where a 3/4 inch drive is required, including structural steel assembly, heavy equipment maintenance, large flange connections, and industrial piping work. The 4-mode push-button switch allows the operator to step through speed and torque settings without leaving the working position, which is useful in overhead and confined-space installations. The built-in LED work light improves visibility in low-light conditions common in mechanical rooms, crawlspaces, and under-deck utility areas.

Key Features

• 3/4 inch drive high torque output rated for heavy-duty fastening applications
• PRECISION WRENCH mode limits overtightening and prevents fastener run-off during final seating
• 4-mode push-button switch for stepwise speed and torque selection without repositioning
• Glass-filled nylon housing resists oils and harsh solvents found in trade environments
• Integrated LED work light with brightness adjustable through the mode selector
• Bare-tool configuration compatible with the 20V MAX battery platform (battery not included)

Compatibility

Designed for use with the 20V MAX cordless battery platform. Compatible batteries and chargers are sold separately. Verify battery voltage and connector type before pairing with existing inventory.

Installation Notes

Installation and operation of high torque impact wrenches should be performed by qualified tradespeople familiar with the fastener specifications and torque requirements of the application. Remove all battery packs before changing drive accessories or inspecting the anvil and detent mechanism. Follow applicable codes and equipment manufacturer torque specifications for structural, piping, or electrical enclosure fasteners — do not rely solely on tool feel or audible indication to confirm final torque. Confirm the socket and retaining pin are fully seated before applying load to prevent drive-end ejection.