Proto JN51604RS Nut Driver 5/16 Inch Hollow Shaft 9 Inch

Product Description

The PROTO JN51604RS is a 5/16 inch hollow shaft nut driver designed for professional tradespeople who need reliable fastener drive in confined or continuous-stud applications. The hollow shaft design allows the driver to slide over long or protruding bolts and threaded rod, giving the tech unlimited depth capacity without repositioning. The overall length is 9 inches, with a blade length of 4 inches. The ergonomic handle is shaped to reduce hand fatigue during repeated use, making it well suited for high-volume fastener work in HVAC, electrical, plumbing, and mechanical installations.

This nut driver is built for use in residential and commercial trade applications where 5/16 inch fasteners are common, including sheet metal work, electrical panel assembly, equipment mounting, and ductwork installation. The 9 inch overall length provides clearance for reaching recessed fasteners without requiring an extension. Meets ANSI specification B107.12. Comes packaged in a pouch, sold as a single unit.

Key Features

• Hollow shaft accepts long bolts and threaded rod with no depth limit
• 5/16 inch drive size covers a common fastener size across HVAC, electrical, and plumbing work
• 9 inch overall length with a 4 inch blade for reach into recessed areas
• Ergonomic handle reduces fatigue during extended use
• Meets ANSI B107.12 specification
• Lifetime warranty

Compatibility

Designed for use wherever a 5/16 inch nut driver is required. The hollow shaft makes it particularly suitable for applications involving long or protruding threaded fasteners common in trade installations.

Installation Notes

This tool is used by HVAC technicians, electricians, plumbers, and general mechanical tradespeople. Always ensure power is off and equipment is de-energized before performing fastener work near live electrical components. Inspect the driver blade for wear or deformation before use. Do not use as a pry bar or impact driver.