Klein Tools Slotted Screwdriver 600-4 1/4 Inch Tip 4 In Square Shank Cushion Grip Driver (Wrench Assist Chrome Steel Shaft HVAC Electrical Turning)

Klein Tools 600-4 1/4" Keystone Tip 4" Square Shank Cushion-Grip Screwdriver

The Klein Tools 600-4 1/4-inch keystone tip slotted screwdriver drives, tightens, and breaks loose stubborn mechanical fasteners across electrical distribution panels, HVAC duct enclosures, motor control centers, and industrial machinery. Manufactured in the USA from specially heat-treated carbon steel with a heavy-duty 4-inch square shank, this professional driver accepts an open-end or adjustable wrench directly onto the blade flats to deliver wrench-assisted high-torque leverage on seized screws. Outfitted with an iconic Cushion-Grip handle, internal twist-resistant anchoring flanges, corrosion-resistant chrome plating, and the Tip-Ident end-cap recognition system, it equips electricians, HVAC technicians, and maintenance mechanics with slip-free slot engagement and ergonomic turning control.

Best Used For:

• Wrench-Assisted High-Torque Mechanical Fastening: Applying an open-end wrench to the square steel shank to break loose over-torqued, painted, or rusted 1/4-inch slotted screws without rounding the fastener slot.
• Electrical Panel and Enclosure Assembly: Securing terminal ground lugs, conduit box covers, industrial disconnects, and heavy-gauge wiring clamps inside electrical enclosures.
• HVAC Sheet Metal and Cabinet Maintenance: Assembling air handler housings, furnace service panels, duct damper regulators, and mechanical vibration mounts.

Key Performance & Safety Features

• Heavy-Duty Square Shank Architecture: Four-sided square blade profile allows standard open-end or adjustable wrenches to apply supplementary rotational torque.
• Precision-Milled Keystone Tip Geometry: Flared 1/4-inch slotted tip profile seats deeply into fastener slots to resist cam-out and prevent head wall distortion.
• Patented Cushion-Grip Handle: Ergonomic black elastomeric handle overmold absorbs rotational hand fatigue while delivering optimal grip friction under oily shop conditions.
• Twist-Proof Internal Handle Flanges: Solid anchor flanges forged directly into the shank base prevent the blade from twisting out or loosening inside the handle cavity.
• Corrosion-Resistant Chrome Plating: Mirror-smooth chrome finish protects the heat-treated alloy steel blade against rust, shop chemicals, and moisture.
• Tip-Ident Fastener Identification: Handle dome features clean white contrasting tip graphics to facilitate instant tool selection from crowded tool belts and bags.

What's Included

• (1) Klein Tools 600-4 1/4" Keystone Tip Screwdriver with 4" Square Shank

Technical Specifications

Pro-Tip: When using an open-end wrench on the square shank for extra break-away torque, place the palm of your non-dominant hand firmly against the handle dome; applying continuous downward axial force keeps the keystone tip firmly seated and prevents it from jumping out of the screw slot.