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3/8" Nut Driver, 6" Hollow Shaft - Klein Tools

Part #: 64638

The Klein Tools 64638 3/8-inch Nut Driver with a 6-inch hollow shaft is engineered for professional technicians and mechanics requiring reliable access in challenging applications. Its specialized design allows for efficient fastening and loosening of nuts on extended bolts and threaded rods, making it an essential tool for automotive, electrical, and industrial maintenance.

Key Features

  • Deep Hollow Shaft: The full hollow shaft design allows the nut driver to fit over extra-long bolts and studs, facilitating work in deep recesses and on applications with extended threads, such as stacked circuit boards or long machine screws.
  • Durable Construction: Built with internal flanges that provide a solid, twist-resistant anchor for the shaft, ensuring stability and longevity under professional use.
  • Corrosion Resistance: Features a premium chrome-plated finish that offers a smooth feel and superior resistance to rust and corrosion, extending the tool's lifespan.
  • Professional-Grade Quality: Manufactured by Klein Tools, a trusted name in hand tools, ensuring consistent performance and durability for demanding work environments.
  • Made in USA: Proudly produced in the United States, reflecting a commitment to quality craftsmanship.

Applications

This 3/8-inch hollow shaft nut driver is ideal for a range of professional tasks. In automotive settings, it excels at accessing nuts on battery terminals, dashboards, interior components, and various engine bay fasteners where bolts may protrude significantly. Industrially, it is highly effective for electrical panel work, securing machinery components, and working on control systems or other applications involving long threaded rods and bolts.

Only 1 left in stock - order soon
List: $19.99 Save: $2.90

$17.09

Free shipping on orders over $250
Lower 48 states and DC. Excludes freight and oversize items.
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  • Model: 439293
  • Shipping Weight: 0.23lbs
  • UPC: 092644650345
  • Manufacturers Part #: 64638
  • Manufactured by: Klein Tools
  • Also Known As: KLE64638, KLN646-3/8

This product was added to our catalog on Thursday 28 May, 2026.

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