Klein Tools 409-70591 9-Key Folding Hex Nutdriver
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9/16 inch hollow nut driver with 4 inch shank and cushion grip for corrosion and twist resistance
The Klein Tools 409-630-9/16 is a hollow-round shank nut driver sized for 9/16-inch fasteners. It provides 4 inches of bolt clearance and a 4-inch shank length for reaching recessed hardware. The cushion-grip handle is chrome-plated and coloured orange for visibility. This hand tool is built for professionals who need corrosion-resistant, twist-resistant performance in electrical and mechanical work.
A hollow shank allows the tool to slide over long bolts or threaded rod where a solid driver would bottom out. The upgrade is worth it when the previous driver could not reach the nut or damaged the fastener corners. Non-magnetic tip avoids picking up metal shavings in sensitive assemblies. It is not for tasks requiring an insulated shaft or a magnetised tip for one-handed starts.
The 4-inch shank depth and matching bolt clearance comfortably handle deep-set nuts on extended threads. The hollow round design maintains grip on the fastener flats without rounding them. Headroom runs out when the fastener exceeds 9/16 inch or when the workspace demands an insulated or ESD-safe tool. No other sizes or drive types are covered by this single driver.
Measured against everything we stock in Screwdrivers, Nut Drivers & Hex Keys, at today’s prices. Recalculated every night.
| Product | |
|---|---|
| Brand name | Klein Tools |
| Product type | Nut Drivers |
| Color and finish | Orange |
| Size & build | |
| Handle construction | Chrome Plated |
| Shipping weight | 4.62 kg |
| Package size | 279 × 254 × 127 mm |
The hollow round shank measures 4 in, giving 4 in of bolt clearance for deep fasteners.
The grip is factory-moulded onto the handle; no user installation is required, and the twist-resistant design prevents the grip from rotating during use.
Wipe the shank clean after use and apply a light oil film; the chrome-plated finish resists corrosion, but the hollow interior can trap moisture if left wet.
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