Klein Tools 635-7/16 Heavy Duty Nut Driver 7/16 Inches

Product Description

The KLEIN TOOLS 635-7/16 is a heavy-duty nut driver built for trade professionals who need reliable fastening performance on the job. The hollow shaft design allows nut driving on bolts of unlimited length, removing a common limitation of solid-shaft drivers. A magnetic tip helps retain the nut during placement, reducing dropped hardware in tight spaces. The cushion grip handle provides comfort during extended use, and a wrench assist flat allows a wrench to be applied for additional torque when hand pressure alone is not enough. Color coding makes it easy to identify this 7/16-inch driver at a glance in a crowded tool pouch or drawer.

This nut driver is suited for residential and commercial electrical, HVAC, and mechanical work where hex fasteners are common. Electricians use it for panel work, conduit fittings, and device installation. HVAC technicians reach for it during equipment mounting, access panel fastening, and control box work. The 7/16-inch drive size covers a wide range of hex nuts and sheet-metal screws used across these trades. The hollow shaft is especially useful when driving nuts onto long threaded rods or all-thread.

Key Features

• Hollow shaft allows nut driving on bolts of unlimited length
• Magnetic tip helps retain nut for single-handed placement
• Wrench assist flat enables extra torque with an open-end or adjustable wrench
• Color-coded handle allows fast size identification in mixed tool storage
• Classic cushion grip handle reduces hand fatigue during extended use
• Heavy-duty construction rated for demanding trade applications

Compatibility

Designed for use with 7/16-inch hex nuts and fasteners commonly found in electrical, HVAC, and mechanical installations.

Installation Notes

This tool is used by electricians, HVAC technicians, and mechanical contractors for hex fastener installation and removal. Always de-energize electrical equipment and follow lockout/tagout procedures before working inside panels or control enclosures. The wrench assist flat is intended for occasional high-torque use and should not replace a ratchet or impact driver where those tools are appropriate.

Technical Specifications

• Drive Size: 7/16 inches
• Shaft Type: Hollow
• Weight: 1.52 pounds
• Package Quantity: 3
• Unit of Measure: EA

Standard Information

• Brand: KLEIN TOOLS
• Manufacturer Part Number: 635-7/16