Milwaukee SHOCKWAVE 49-66-4503 Impact Duty Magnetic Nut Driver

Milwaukee SHOCKWAVE 49-66-4503 Impact Duty Magnetic Nut Driver, 5/16" x 1-7/8"

The Milwaukee 49-66-4503 SHOCKWAVE Impact Duty Magnetic Nut Driver is engineered for professionals who need fast, secure fastening in tight, hard-to-reach spaces. Sized at 5/16" x 1-7/8", this nut driver is part of Milwaukee's SHOCKWAVE Impact Duty accessory line, built to withstand the high torque and repeated impacts generated by impact drivers. A magnetic tip holds nuts and fasteners securely on the bit, helping reduce dropped hardware and speeding up one-handed starts on ladders, in panels, and overhead. Electricians, HVAC technicians, maintenance crews, and other trade professionals turn to this compact nut driver when a standard socket or wrench won't reach the fastener.

Key Features

• Trade Size: 5/16" x 1-7/8" profile sized for precise nut engagement in confined spaces, with a short overall length that reaches recessed fasteners other tools can't.
• SHOCKWAVE Impact Duty Design: Engineered as part of Milwaukee's SHOCKWAVE Impact Duty lineup to handle the torque and vibration generated by impact drivers, helping extend bit life under heavy daily use.
• Magnetic Tip: An integrated magnet holds fasteners securely on the bit for one-handed starts, helping reduce dropped hardware when working on ladders, in panels, or overhead.
• Nut Driver Configuration: Purpose-built nut driver profile for quick, repeatable fastening of nuts and hex-head hardware on the jobsite.
• Compact Length: The 1-7/8" overall length allows access into tight, obstructed work areas common on electrical and mechanical installations.
• Impact-Driver Compatible: Designed to be chucked into an impact driver for faster, higher-torque fastening than hand tools alone.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Electrical Panel and Device Fastening: Drives nuts on panelboards, enclosures, and electrical hardware in tight quarters.
• HVAC and Mechanical Assembly: Fastens hex-head hardware on ductwork, equipment, and mechanical assemblies.
• General Maintenance and Repair: A dependable bit for facilities and maintenance technicians working across a range of nut and fastener sizes.
• Automotive and Equipment Fastening: Useful for driving nuts on machinery, equipment, and automotive applications.
• Impact Driver Fastening Tasks: Built to be chucked directly into an impact driver for fast, high-torque nut driving.

Why Milwaukee?

Milwaukee's SHOCKWAVE Impact Duty accessories are engineered to hold up to the repeated torque and vibration of impact driver use, and the 49-66-4503 nut driver carries that same Impact Duty engineering into a compact, magnetic-tip format. The 5/16" x 1-7/8" sizing and magnetic tip work together to keep fasteners secure and accessible even in tight, obstructed spaces. For professionals who need a dependable fastening solution that keeps pace with demanding jobsite schedules, this SHOCKWAVE nut driver delivers consistent, repeatable performance.