Klein Tools s16 Nut Driver 1/2 Inch Hollow Shaft

Product Description

The KLEIN TOOLS s16 is a 1/2-inch nut driver built for professional use in electrical, HVAC, and general trade work. It features a 3-inch hollow shaft that fits over long bolts and studs, making it practical for stacked circuit board installations and similar deep-fastener applications. The chrome-plated shaft resists corrosion and anchors securely to the handle via internal flanges that prevent twisting under load. The Comfordome handle is contoured to fit the palm and is color-coded for quick size identification in a tool pouch or bag. Manufactured in the USA and meets or exceeds applicable ASME and ANSI specifications.

This nut driver is suited for residential and commercial electrical work, panel installations, HVAC equipment servicing, and any application requiring consistent torque on 1/2-inch fasteners. The hollow shaft design is especially useful when working on control boards, terminal blocks, or any assembly where fasteners extend beyond the nut face. It is a standard hand tool carried by licensed electricians, HVAC technicians, and instrumentation professionals.

Key Features

• 1/2-inch drive size fits standard hex fasteners in electrical and HVAC applications
• 3-inch hollow shaft accommodates long bolts, studs, and stacked circuit board fasteners
• Chrome-plated shaft resists corrosion and extends service life
• Internal flanges lock the shaft to the handle for twist-resistant torque transfer
• Color-coded Comfordome handle allows fast size identification and comfortable grip
• Meets or exceeds ASME and ANSI specifications
• Made in the USA

Compatibility

Designed as a standard 1/2-inch nut driver suitable for use on hex fasteners in electrical panel work, HVAC equipment, and general trade applications requiring a hollow-shaft driver.

Installation Notes

This tool is used by licensed electricians and HVAC technicians as a hand-drive fastening tool. Always de-energize and lock out electrical panels and equipment before accessing fasteners in live enclosures. The hollow shaft should be inspected periodically for cracks or deformation that could compromise torque transfer. Follow applicable NEC guidelines when working inside electrical enclosures.

Technical Specifications

• Drive Size: 1/2 inch
• Shaft Length: 3 inches
• Shaft Type: Hollow
• Shaft Finish: Chrome-plated
• Handle Type: Comfordome, color-coded
• Standards: Meets or exceeds ASME and ANSI specifications
• Country of Origin: USA

Standard Information

• Brand: KLEIN TOOLS
• Manufacturer Part Number: s16