Irwin IWAF243716B10 Nut Driver Bit 7/16 in Hex

Product Description

The IRWIN IWAF243716B10 is a power screwdriver nut driver bit designed for driving hex fasteners in professional trade applications. It features a 7/16 inch hex drive size and a 1/4 inch shank, making it compatible with standard power screwdriver chucks and quick-change bit holders. With an overall length of 2-9/16 inches, this bit provides the reach needed to seat hex-head fasteners in tight or recessed locations. HVAC technicians, electricians, and mechanical contractors reach for nut driver bits like this when installing equipment panels, junction boxes, and sheet metal assemblies where speed and repeatability matter.

This nut driver bit is suited for residential and light commercial installations where hex-head sheet metal screws and hex-head machine bolts are common fasteners. Typical applications include HVAC equipment assembly, electrical panel work, and general mechanical fastening tasks. The 7/16 inch hex size is a frequently used size across HVAC equipment enclosures and electrical hardware. This bit is sold individually and is intended for use with power screwdrivers and impact-rated bit holders that accept a 1/4 inch hex shank.

Key Features

• 7/16 inch hex tip for driving standard hex-head fasteners
• 1/4 inch shank fits standard quick-change and power screwdriver chucks
• 2-9/16 inch overall length provides reach for recessed fastener locations
• Compact bit profile suited for panel, enclosure, and sheet metal work
• Lightweight at 0.08 pounds for low operator fatigue during repetitive driving tasks

Compatibility

Designed as a replacement or supplemental nut driver bit for use with power screwdrivers and drills accepting a standard 1/4 inch hex shank bit holder.

Installation Notes

Insert the 1/4 inch shank fully into the tool chuck or quick-change holder before operating. Ensure the tool is set to an appropriate torque setting to avoid overdriving or stripping hex-head fasteners. Follow all applicable jobsite safety procedures and de-energize electrical panels or HVAC equipment before fastening work in live enclosures.