Proto JN5504RMS Hollow Shaft Nut Driver 8.25 in Oal

Product Description

The PROTO JN5504RMS is a hollow shaft nut driver designed for fastening and loosening hex nuts and bolts in tight or deep-reach applications. The hollow shaft allows the driver to pass over threaded rod or extended stud ends, making it especially useful in HVAC, electrical, and plumbing service work where clearance is limited. The driver measures 8.25 inches overall length with a 4-inch blade length and fits a 5 mm nut size. It meets ANSI Spec B107.12 and carries a lifetime warranty. Installation and service technicians reach for this tool when a standard closed-tip driver will not clear the fastener assembly.

This nut driver is suited for residential and commercial service environments where technicians regularly encounter recessed or stud-mounted hardware. Common applications include panel assembly, equipment mounting, and terminal work on HVAC units, electrical enclosures, and plumbing fixtures. The ergonomic handle reduces hand fatigue during repetitive fastening tasks. It ships in a pouch and is sold as a single unit, making it a practical addition to a service technician's individual kit or a replacement for a worn tool.

Key Features

• Hollow shaft design passes over threaded rod and extended studs for deep-reach fastening
• 5 mm nut size for metric fastener applications
• 8.25 inches overall length with a 4-inch blade for extended reach
• Ergonomic handle reduces hand fatigue during repetitive use
• Meets ANSI Spec B107.12
• Lifetime warranty

Compatibility

Designed for use with 5 mm hex nuts and fasteners in residential and commercial service applications across HVAC, electrical, and plumbing trades.

Installation Notes

No power-down or system shutoff is required for tool use, but always de-energize electrical panels and equipment before working on live assemblies. Confirm the 5 mm drive size matches the fastener before applying torque to avoid rounding. Store in the included pouch to protect the shaft and handle finish.