Klein Tools 630-1/2 Hollow Shaft Nut Driver 1/2 Inch Hex

Product Description

The KLEIN TOOLS 630-1/2 is a hollow shaft nut driver designed for electrical and mechanical work where a fastener must pass through the tool. The 1/2 inch hex drive fits standard hex-head nuts and bolts, while the hollow shaft allows the driver to slide over long threaded studs and bolts without bottoming out. The shank measures 3 inches with an overall length of 7-5/16 inches. The cushion grip handle provides control and reduces hand fatigue during extended use. This tool is a standard choice for electricians, HVAC technicians, and panel installers who regularly work with machine screws and hex hardware.

The 630-1/2 is suited for residential and light commercial service work where 1/2 inch hex fasteners are common, including electrical panel assembly, control board mounting, junction box work, and HVAC equipment access panels. The hollow shaft design is particularly useful when working with long conduit locknuts, threaded rod, or any stud application where a solid-shaft driver would be blocked by excess thread length.

Key Features

• Hollow shaft design fits over long bolts and threaded studs without obstruction
• 1/2 inch hex drive size for standard hex-head nuts and fasteners
• 3 inch shank length for access in confined spaces
• 7-5/16 inch overall length for balanced reach and leverage
• Cushion grip handle reduces hand fatigue during repetitive driving

Compatibility

Designed for use with standard 1/2 inch hex-head nuts and fasteners commonly found in electrical, HVAC, and mechanical trade applications.

Installation Notes

This nut driver is a hand tool requiring no power source or special installation. Ensure the hex socket is fully seated on the fastener before applying torque to avoid rounding the nut. When working near energized panels or equipment, follow NFPA 70E safe work practices and de-energize circuits where required before servicing hardware.

Technical Specifications

• Hex Drive Size: 1/2 inch
• Shank Length: 3 inches
• Overall Length: 7-5/16 inches
• Shaft Type: Hollow
• Handle Type: Cushion Grip
• Handle Color: Red
• Weight: 0.25 pounds
• Sold As: Each

Standard Information

• Brand: KLEIN TOOLS
• Manufacturer Part Number: 630-1/2