Klein Tools 646-1/4M Magnetic Nut Driver 1/4 Inch

Product Description

The KLEIN TOOLS 646-1/4M is a magnetic-tip nut driver built for electricians and trade professionals who need fast, reliable fastener driving in tight spaces. The 1/4-inch drive size is the most common in electrical work, and the magnetic tip holds fasteners securely so technicians can start screws and nuts one-handed. The hollow shaft design accommodates long bolts and threaded rod, removing a common limitation of solid-shaft drivers. At 6 inches in overall length, it provides clearance in panel boxes and junction boxes without becoming unwieldy.

This nut driver is suited for residential and commercial electrical work, including panel installation, conduit fitting, device mounting, and equipment terminations. The 6-inch hollow shaft is a standard configuration for electricians working inside load centers and distribution panels where fastener length can vary. It is also used by HVAC technicians and general trade professionals for cabinet screws and equipment cover fasteners.

Key Features

• Magnetic tip retains 1/4-inch nuts and fasteners for single-hand starting
• Hollow shaft accommodates bolts and threaded rod of any length
• 6-inch shaft length provides reach inside panels and enclosures
• 1/4-inch drive size matches the most common electrical fastener specification
• Sold individually; minimum order quantity of 6 units per pack

Compatibility

Designed for use with standard 1/4-inch hex nuts and fasteners commonly found in electrical panels, junction boxes, conduit fittings, and light commercial equipment enclosures.

Installation Notes

De-energize and lock out all circuits before working inside electrical panels or enclosures where this driver will be used. A licensed electrician should perform panel-level work in accordance with applicable NEC requirements. Inspect the magnetic tip before use to confirm it seats fasteners securely, and avoid using the driver as a pry or impact tool, as this can damage the shaft or tip.

Technical Specifications

• Drive Size: 1/4 inch
• Shaft Length: 6 inches
• Shaft Type: Hollow
• Tip Type: Magnetic
• Unit of Measure: Each
• Minimum Order Quantity: 6

Standard Information

• Brand: KLEIN TOOLS
• Manufacturer Part Number: 646-1/4M