Klein Tools Folding Hex Key Set 12-Key SAE Metric Sizes Reinforced Nylon Handle CR-V Steel

Klein Tools Folding Hex Key Set 12-Key SAE Metric Sizes

Professional-Grade Compact Folding Tool Set

The Klein Tools Folding Hex Key Set delivers professional-grade fastening performance for electrical and mechanical applications. This CR-V steel construction folding set features 12 commonly used SAE and metric hex key sizes in a compact reinforced nylon handle designed for electricians, technicians, and maintenance professionals, providing the reliable performance and industry-leading quality that tradesmen demand from America's most trusted tool manufacturer.

Professional Features & Benefits

Compact Design & Versatility

• 12 Essential Sizes - Combines six SAE (5/64", 3/32", 7/64", 1/8", 9/64", 5/32") and six metric (1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm) hex keys in one compact tool for maximum convenience
• High-Leverage Blades - Individual keys open independently up to 270 degrees providing superior access and torque application in tight spaces
• Square-Cut Ends - Precision-machined ends ensure secure, full-depth fit and maximum contact with fasteners to prevent slippage and stripping
• Side Access Design - Strategic openings on case sides provide unimpeded access to outer keys without opening the entire set

Durability & Construction

• Heat-Treated CR-V Steel - Premium chrome vanadium steel construction with black phosphate finish delivers exceptional strength and best-in-class rust prevention
• Reinforced Nylon Handle - Sturdy, comfortable grip design withstands heavy use while providing secure tool storage and portability
• Adjustable Tension - Convenient #2 Phillips fastener allows effortless adjustment of key tightness or looseness for optimal operation

Technical Specifications

Overall dimensions: 5.5" length x 1.45" width x 1.6" height, weighing 0.37 lbs. Handle length: 4.38" with reinforced nylon construction. Key lengths range from 2.69" to 3.8". Heat-treated CR-V steel construction with black phosphate finish. Includes 12 hex key sizes: SAE (5/64", 3/32", 7/64", 1/8", 9/64", 5/32") and Metric (1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm). Compact folding design with 270-degree blade opening capability.

Installation & Usage

1. Select appropriate hex key size by identifying fastener requirements and opening desired blade up to 270 degrees
2. Insert square-cut end fully into hex socket ensuring complete engagement for maximum torque transfer
3. Apply steady, controlled pressure while turning to prevent fastener damage and ensure professional results
4. Utilize high-leverage blade design for increased torque application in confined electrical panel and equipment spaces
5. Adjust key tension using #2 Phillips fastener as needed for optimal blade retention and smooth operation
6. Fold unused keys into reinforced nylon handle for compact storage and easy transport between job sites

Professional Applications

Ideal for:

• Electrical Panel Work - Securing terminal blocks, breaker connections, and control panel assemblies in commercial and industrial installations
• HVAC Systems - Fastening equipment housings, control boards, and mounting brackets in heating and cooling applications
• Telecommunications - Installing rack-mounted equipment, cable management systems, and network hardware in data centers
• Industrial Maintenance - Servicing machinery, motor connections, and equipment housings requiring hex fasteners
• Residential Wiring - Securing electrical boxes, fixture mounting, and residential panel work requiring compact tool access
• Commercial Construction - Installing conduit fittings, junction boxes, and electrical equipment in new construction projects
• Automotive Electrical - Working on vehicle electrical systems, battery connections, and automotive wiring applications
• Electronic Equipment - Servicing control panels, electronic enclosures, and precision equipment requiring hex fasteners

Folding Design Advantage

Klein Tools' innovative folding hex key design maximizes portability while maintaining professional performance standards. The reinforced nylon handle provides secure storage for all 12 sizes while the high-leverage blade system delivers superior torque application. Square-cut ends ensure precise fastener engagement, while the heat-treated CR-V steel construction guarantees long-lasting durability under demanding electrical and mechanical applications.

Why Choose Klein Tools Quality?

Since 1857, Klein Tools has maintained its commitment to manufacturing America's finest professional tools for electrical tradesmen. This folding hex key set exemplifies Klein's dedication to precision engineering, rigorous testing protocols, and innovative design solutions that enhance productivity and safety for electrical professionals, technicians, and maintenance specialists across all industries.