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Klein Tools 9/16 inch nut driver with black cushion grip and chrome plated handle

Klein Tools

Klein Tools 646-9/16 nutdriver

SKU CH-84B8-CGYKK MPN 646-9/16

Hollow-shank nut driver fits 9/16 in fasteners with a 6 in bolt clearance and cushion grip

  • TypeNut Drivers
  • Color/FinishBlack
  • FeaturesTwist Resistant Corrosion Resistant Cushion Grip
  • Handle MaterialChrome Plated
  • Hollow shaft clears bolts up to 6 in depth
  • 9/16 in tip fits SAE fasteners securely
  • Cushion grip resists twisting during high torque use
  • Chrome plated handle protects against corrosion
  • Non magnetic tip avoids unwanted metal attraction

Nut driver for 9/16 inch fasteners

This Klein Tools nut driver fits 9/16 inch fasteners and provides a six-inch hollow shank for bolt clearance. The cushion grip is designed for twist resistance during repeated use. It is built for technicians who need reliable access to deep or recessed hardware. The tool carries a California Proposition 65 warning for chemical exposure.

Chrome-plated handle with cushion grip

The handle uses chrome-plated construction with a black cushion grip that resists corrosion and twisting. Its hollow round shank allows long bolts to pass through while the nut is turned. No magnetic tip or insulation is included, so the driver suits general mechanical work rather than electrical tasks. The grip shape aims to reduce hand fatigue on extended jobs.

Upgrades from short or solid-shank drivers

This model replaces shorter or solid-shank nut drivers when deeper bolt clearance is required. The six-inch shank length reaches fasteners that shorter tools cannot engage. The jump is worth it for maintenance crews who regularly service equipment with long threaded rods or recessed mounting points. Buyers needing insulated or magnetic tips should select a different tool.

Highlights

  • Hollow shaft clears bolts up to 6 in depth
  • 9/16 in tip fits SAE fasteners securely
  • Cushion grip resists twisting during high torque use
  • Chrome plated handle protects against corrosion
  • Non magnetic tip avoids unwanted metal attraction

Specifications

BrandKlein Tools
Model646-9/16
TypeNut Drivers
Color/FinishBlack
FeaturesTwist Resistant Corrosion Resistant Cushion Grip
Handle MaterialChrome Plated

Questions about this item

Does the 9/16 inch nutdriver use a standard SAE hex interface?

Yes, it follows SAE sizing for 9/16 inch fasteners and has a hollow round shank that clears bolts up to 6 inches deep.

What handle clearance and shank length does the 6 inch hollow shaft require?

The cushion-grip handle adds diameter, so allow space for a 6 inch shank plus the handle; the chrome-plated shaft fits standard 9/16 inch hex heads.

How do you seat the driver on a recessed 9/16 inch bolt without stripping the corners?

Press the hollow shank fully over the fastener until the tip bottoms out, then turn; the twist-resistant shank prevents cam-out when aligned straight.

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