Klein Tools 646-7/16-INS Insulated Nut Driver 7/16-Inch 6-Inch Hollow Shaft

7/16-Inch Insulated Nut Driver

The Klein Tools 646-7/16-INS is a hollow-shaft nut driver built for 7/16-inch SAE fasteners. Its insulated construction and ESD-safe rating suit electrical and utility work where shock protection matters. A 6-inch shank reaches recessed hardware while a cushioned grip reduces hand fatigue during extended use. The hollow round shank allows bolt pass-through for long-threaded studs.

Electrical and maintenance professionals

Electricians, HVAC technicians and facility maintenance crews benefit from the insulated shaft and ESD-safe handling when working near live circuits or sensitive components. The 9/32-inch bolt clearance accommodates standard hardware in panel and junction-box tasks. Users who require magnetic fastener retention or a shorter shank for tight enclosures should consider alternative driver styles.

6-inch hollow insulated shaft

The defining specification is the 6-inch hollow round shank combined with full insulation and ESD-safe materials. This length and profile determine reach into deep cabinets and the ability to drive nuts onto long studs without bottoming out. Verify that the 7/16-inch tip and 9/32-inch bolt clearance match the fastener dimensions in your application before purchase.