Klein Tools 409-602-4-INS insulated hand screwdriver slotted 1/4" 4 in round shank

Insulated Cabinet Tip Screwdriver

The Klein Tools 409-602-4-INS is an insulated hand screwdriver designed for electrical work where protection against electric shock is required. It suits electricians and technicians who need a 1/4 inch slotted tip for cabinet screws and terminal blocks. The tool is individually tested and marked with the official 1000 Volt rating symbol for clear identification on the job site. It is not intended for high-torque mechanical fastening or non-electrical heavy-duty assembly tasks.

Capacity and headroom

The screwdriver features a 4 inch heavy duty round shank and an overall length of 8 11/32 inch, providing reach into deep cabinets or enclosures. Precision ground tips fit screw openings securely to resist slippage during use. The cushion grip handle delivers greater torque and comfort for extended periods, while the patented Tip Ident allows quick verification of the tip type and orientation. Users requiring a larger tip width or longer shank for bigger fasteners will need a different tool.

Standards and practical limits

The tool exceeds IEC 60900 and ASTM F1505 standards for insulated tools, with two layers of insulation on the shank for shock protection. Custom US made tool steel construction supports durability under the rated voltage. The insulation is rated for 1000 Volts and must not be used on live circuits above that level or if the insulation shows any damage. The steel handle material conducts electricity if the insulation layer is compromised, so regular visual inspection is essential.