Studio view of the Klein Tools keystone screwdriver featuring a black cushion-grip handle and a 6-inch square steel shank.
Detailed infographic of the screwdriver highlighting features such as the integral twist-resistant flanges, cushion-grip handle, and precision-machined tip.
Angled perspective of the screwdriver showing the full length of the square shank extending from the black and yellow handle.
Top-down view of the handle end showing the Tip-Ident markings 600-6 and a flathead symbol for quick tool identification.
Angled view focusing on the 5/16 inch keystone tip and the heavy-duty square shank designed for wrench-assisted turning.
Close-up side profile of the handle showing the ribbed cushion grip and the connection point between the yellow flange and black rubber.
Studio view of the Klein Tools keystone screwdriver featuring a black cushion-grip handle and a 6-inch square steel shank.
Detailed infographic of the screwdriver highlighting features such as the integral twist-resistant flanges, cushion-grip handle, and precision-machined tip.
Angled perspective of the screwdriver showing the full length of the square shank extending from the black and yellow handle.
Top-down view of the handle end showing the Tip-Ident markings 600-6 and a flathead symbol for quick tool identification.
Angled view focusing on the 5/16 inch keystone tip and the heavy-duty square shank designed for wrench-assisted turning.
Close-up side profile of the handle showing the ribbed cushion grip and the connection point between the yellow flange and black rubber.
KLEIN TOOLS

Klein Tools 6006 Keystone Screwdriver 5/16 Inch Tip 6 Inch Square Shank Heavy Duty Flathead Wrench Assist Cushion Grip Handle Made in USA

In stock
SKU: 6006
$13.97 USD

Description

Maximum Torque for the Toughest Fastening Jobs

The Klein Tools 600-6 5/16-Inch Keystone Screwdriver is engineered for professionals who encounter stubborn fasteners that demand more than just hand power. Unlike standard round-shank drivers, this tool features a heavy-duty 6-inch square shank. This design allows you to apply a wrench directly to the shaft, generating exceptional torque to break loose rusted, painted, or over-tightened screws without damaging the tool. Precision-machined to exact tolerances, the keystone tip fits securely into screw slots, reducing cam-out and ensuring efficient power transfer during heavy-duty applications.

Beyond brute strength, this screwdriver is built for all-day comfort and long-lasting durability. It features Klein's signature Cushion-Grip™ handle, which provides a soft, non-slip surface for superior control while resisting oil, gas, and water. Inside the handle, integral flanges anchor the blade deeply to prevent twisting or pushing through under pressure. Finished with premium chrome plating for corrosion resistance and equipped with the Tip-Ident® system for quick retrieval from your tool belt, this American-made tool meets or exceeds ASME / ANSI specifications for uncompromising quality.

Key Features

  • Wrench-Assist Design: Heavy-duty square shank allows for the use of a wrench or pliers to apply extra torque.
  • Precision Tip: 5/16-inch Keystone tip is machined for an exact fit to reduce slippage and wear.
  • Cushion-Grip™ Handle: Offers greater torque comfort and a slip-resistant grip for heavy use.
  • Solid Construction: Internal flanges securely anchor the blade inside the handle to provide a twist-resistant foundation.
  • Durable Finish: Special heat-treated shaft with premium chrome plating resists rust and corrosion.
  • Tip-Ident® System: Handle end is marked to easily identify the tip type and orientation in crowded tool bags.
  • Made in the USA: Manufactured to strict standards to meet or exceed ASME / ANSI specifications.

What's Included

  • (1) 5/16 in. Keystone Screwdriver with 6 in. Square Shank (600-6)

Specifications

Brand Klein Tools
Model Number 600-6
Tip Type Keystone (Flathead)
Tip Size 5/16 in.
Shank Type Square
Shank Length 6 in.
Overall Length 10.938 in.
Material Heat-Treated Steel
Handle Material Rubber Cushion-Grip
Magnetic No
Insulated No
Weight 6.4 oz
Country of Origin USA
Pro-Tip: The square shank on this screwdriver is designed specifically for wrench assistance. If you encounter a screw that won't budge with hand pressure alone, slide an adjustable wrench or open-end wrench onto the square shaft near the handle. This leverage multiplier allows you to break the torque seal on frozen fasteners safely and easily.