Proto JN0504RMS Hollow Shaft Nut Driver 5 Mm

Product Description

The PROTO JN0504RMS is a 5 mm hollow shaft nut driver built for professional trade use in HVAC, electrical, and mechanical service work. The hollow shaft design accommodates fasteners with protruding studs or extended bolt lengths, allowing the driver to seat fully without obstruction. The ergonomic handle is shaped for grip comfort and torque transfer during repetitive fastener work. At 8.25 inches overall length with a 4-inch blade, this driver reaches fasteners in deeper cavities than standard-length nut drivers. It meets ANSI B107.12 specifications and carries a lifetime warranty. Technicians working on control panels, equipment cabinets, and terminal blocks will find this a practical addition to a service kit.

The JN0504RMS is suited for residential and light commercial service applications where 5 mm fasteners are common. Typical use cases include HVAC control board enclosures, electrical panel work, and mechanical equipment assembly and disassembly. The hollow shaft is especially useful when driving nuts onto threaded rods or long bolt shafts where a solid-tip driver would bottom out before fully seating. It ships individually in a pouch and is sold as a single unit.

Key Features

• Hollow shaft accommodates protruding studs and extended bolt lengths
• 5 mm drive size for metric fastener applications
• 8.25 inch overall length with 4 inch blade for extended reach
• Ergonomic handle designed for grip comfort and torque control
• Meets ANSI B107.12 specification
• Lifetime warranty from PROTO

Compatibility

Designed as a general-purpose 5 mm hollow shaft nut driver suitable for HVAC, electrical, and mechanical service applications requiring metric fastener driving with extended reach.

Installation Notes

This tool is used by HVAC technicians, electricians, and mechanical service professionals. Always de-energize equipment and follow applicable NFPA 70 (NEC) lockout/tagout procedures before opening electrical enclosures or control panels. Inspect the driver tip and handle for wear or damage before use. Do not use as a substitute for a socket or apply impact force to the handle.