Klein Tools 409-630-9/16 nutdriver

9/16-inch hollow nut driver

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.

Replaces worn or undersized drivers

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.

4-inch bolt clearance and shank

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.