Milwaukee 49-66-4513 5/16 Inch Magnetic Nut Driver 3 Pack

Product Description

The Milwaukee Electric Tool Corp 49-66-4513 is a 3-pack of SHOCKWAVE Impact Duty 5/16-inch insert magnetic nut drivers designed for use with impact drivers in demanding trade applications. Each driver features a magnetic tip that securely holds fasteners during driving, reducing dropped hardware on the job. Built to handle the high-torque output of impact drivers, these insert-style drivers integrate into standard quick-change chuck systems. Electricians, HVAC technicians, plumbers, and general trade contractors reach for these when running self-tapping screws, hex-head sheet metal screws, and similar fasteners at speed.

These 5/16-inch magnetic nut drivers are suited for residential and light commercial work where impact driver use is standard — panel work, ductwork assembly, equipment installation, and electrical rough-in. The insert design means they seat directly into a 1/4-inch hex quick-change chuck without an extension. The 3-pack format allows techs to keep spares in a tool bag or leave dedicated drivers staged at multiple work points.

Key Features

• 5/16-inch drive size for hex-head fasteners common in HVAC, electrical, and plumbing applications
• SHOCKWAVE Impact Duty construction rated for use with impact drivers
• Insert style fits standard 1/4-inch hex quick-change chuck systems
• Magnetic tip retains fasteners during driving to reduce drops
• 3-pack provides redundancy and staging flexibility on multi-point jobs

Compatibility

Designed for use with any impact driver or drill accepting a standard 1/4-inch hex quick-change chuck. Compatible with 5/16-inch hex-head fasteners including sheet metal screws and machine screws common in HVAC, electrical, and plumbing trade work.

Installation Notes

Insert the driver fully into the tool chuck until the locking ball engages before applying load. Use with an impact driver set to an appropriate torque mode to avoid fastener overdriving or cam-out. Inspect the magnetic tip and hex shank for wear or rounding before use on critical connections. No special licensing or code compliance applies to the tool accessory itself, though the fastener applications it serves must meet applicable NEC, IFGC, or IPC requirements.

Technical Specifications

• Drive Size: 5/16 inches
• Driver Style: Insert (no shank extension)
• Chuck Compatibility: 1/4-inch hex quick-change
• Pack Quantity: 3
• Weight: 0.9 pounds
• Unit of Measure: EA
• Package Quantity: 6

Standard Information

• Brand: Milwaukee Electric Tool Corp
• Manufacturer Part Number: 49-66-4513