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The WILLIAMS COMFORT PRODUCTS 24405 is a 5/16-inch nut driver with a 3-inch shaft and cushion grip handle, built for trade professionals who need reliable hand torque on hex fasteners. The cushion grip reduces hand fatigue during extended use, making it a practical choice for HVAC technicians, electricians, and plumbers working in tight service environments. At 0.216 pounds, it is a lightweight tool that fits easily in a service bag or tool pouch. This nut driver is sized for the 5/16-inch hex fasteners commonly found on equipment panels, junction boxes, and service covers.
The 24405 is suited for residential and light commercial service work wherever 5/16-inch hex fasteners are used. HVAC technicians will find it useful for removing and reinstalling cabinet panels, blower access doors, and electrical knockouts. Electricians and plumbers reach for this size when working with common conduit fittings, access covers, and equipment mounting hardware. The 3-inch shaft provides enough reach for standard panel work without adding unnecessary bulk.
Designed for use with standard 5/16-inch hex fasteners found across HVAC, electrical, and plumbing equipment in residential and light commercial applications.
This nut driver is a hand tool requiring no power source or special licensing. Apply steady, controlled torque to avoid fastener damage or cam-out. Use appropriate personal protective equipment when working inside energized panels, and follow OSHA and NEC requirements for safe tool use around electrical systems. Always de-energize equipment before removing access panels or covers.
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