Milwaukee 49-66-4703 Shockwave Magnetic Nut Driver 5/16 in

Product Description

The MILWAUKEE 49-66-4703 SHOCKWAVE Impact Duty Magnetic Nut Driver is a hex shank driver bit built for continuous use with impact drivers and drill drivers. Made from heat-treated Custom Alloy 76 steel, the bit is engineered to maintain controlled hardness through repeated high-torque cycles, extending service life in demanding applications. The integrated SHOCK ZONE geometry absorbs peak torque at the shank to reduce breakage under impact load. A precision-grade magnet secures fastener heads during positioning and drive, keeping screws seated through the full application cycle.

This nut driver is suited for residential and commercial construction, mechanical assembly, and electrical work where 5/16 inch hex fasteners are standard. It is designed to seat and drive sheet metal screws, hex head fasteners, and similar hardware in wood, metal, and composite materials. The color-coded band on the shank allows quick size identification when working from a pouch or open tray alongside other driver sizes. Compatible with any 1/4 inch hex quick-change chuck on standard impact drivers and drill drivers.

Key Features

• Heat-treated Custom Alloy 76 steel controls hardness for extended bit life under impact load
• SHOCK ZONE geometry at the shank absorbs peak torque and reduces breakage
• Impact Duty magnet resists loosening over repeated heavy-duty cycles
• Chamfered tip edge maximizes screw-head engagement and reduces cam-out
• Improved hex geometry provides tighter fit and reduced stripping
• Color-coded band for fast size identification in multi-bit setups
• Compatible with both impact drivers and drill drivers via 1/4 inch hex chuck

Compatibility

Designed for use with impact drivers and drill drivers equipped with a standard 1/4 inch hex quick-change chuck. Fits 5/16 inch hex fasteners including sheet metal screws and hex head cap screws.

Installation Notes

Installation requires no tools beyond the impact driver or drill driver itself. Ensure the driver is powered off or the battery is disconnected before inserting or removing the bit from the chuck. Do not use with a rotary hammer in impact mode. Inspect the magnet and tip geometry before each use and replace the bit if the tip shows visible rounding or the hex shank is damaged.

Technical Specifications

• Drive Size: 5/16 inches hex
• Overall Length: 1-7/8 inches
• Shank Width: 0.49 inches
• Weight: 0.05 pounds
• Material: Heat-Treated Custom Alloy 76 Steel
• UPC: 0045242213894
• Sold As: Each

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 49-66-4703