Stanley 66-170-A Slotted Screwdriver Square Shank

Product Description

The STANLEY 66-170-A is a standard slotted screwdriver built for heavy-duty fastening tasks in trade and industrial environments. The blade measures 10 inches in length with a 3/8-inch tip width, and the overall length reaches 15.25 inches, giving technicians extended reach in deep or confined spaces. The square shank design allows a wrench to be applied directly to the shank for added torque when driving stubborn fasteners. The acetate handle provides a firm grip and resists common shop solvents. Electricians, HVAC technicians, plumbers, and general tradespeople use this driver for large slotted fasteners on equipment panels, junction boxes, and mechanical assemblies.

This screwdriver is suited for both residential and commercial service work where a full-length, heavy-duty slotted driver is required. The extended blade length makes it practical for reaching recessed fasteners inside equipment cabinets, electrical panels, or mechanical enclosures. The square shank with wrench-flat capability is especially useful when fastener corrosion or paint buildup requires extra rotational force beyond what hand grip alone can deliver. It is a general-purpose hand tool appropriate across HVAC, plumbing, electrical, and light mechanical trades.

Key Features

• 3/8-inch blade tip width for standard large slotted fasteners
• 10-inch blade length for extended reach in deep or confined spaces
• 15.25-inch overall length for maximum leverage on stubborn fasteners
• Square shank allows wrench application for high-torque driving
• Acetate handle resists solvents and provides secure grip

Compatibility

Designed as a general-purpose OEM-style replacement or service hand tool compatible with standard slotted fastener applications across trade disciplines including HVAC, plumbing, and electrical work.

Installation Notes

This tool is used by licensed tradespeople across HVAC, plumbing, and electrical disciplines. Always ensure the tip width matches the fastener slot to prevent cam-out and fastener damage. When applying a wrench to the square shank for additional torque, use an appropriately sized open-end or adjustable wrench and work carefully to avoid rounding the shank flats. De-energize electrical equipment and shut off relevant systems before accessing fasteners on live or pressurized assemblies.