Hex Head Cap Screws: Strength, Precision, and Versatility in Every Application
Hex head cap screws are among the most commonly used fasteners in manufacturing, construction, and maintenance applications. Known for their six-sided head design, these screws provide excellent torque control and secure fastening, making them ideal for applications requiring precision, reliability, and strength.
Available in both fractional (Fractional) and metric sizes, hex head cap screws meet a wide range of global standards and are used across industries from heavy equipment manufacturing to automotive assembly. Fractional sizes are typically preferred in U.S. manufacturing, while metric sizes align with international and OEM specifications.
Hex head cap screws are manufactured in various grades and materials to suit specific performance needs. Grade 2 screws are made from low- or medium-carbon steel, offering general-purpose strength for light-duty applications. Grade 5 fasteners, heat-treated for higher tensile strength, are ideal for automotive and machinery use. Grade 8 screws, made from alloy steel, deliver superior hardness and durability for high-stress, high-load environments.
In metric classifications, Class 8.8, 10.9, and 12.9 represent increasing strength levels—equivalent to U.S. Grades 5 and 8. These are commonly used in precision-engineered assemblies requiring consistent torque and tension performance.
Material options include zinc-plated steel for corrosion resistance, stainless steel (304 and 316) for strength and rust protection, and alloy steel for maximum load capacity. Each material provides unique advantages depending on the environment and application.
Key Features:
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Available in fractional (Fractional) and metric sizes
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Grades 2, 5, and 8 / Classes 8.8, 10.9, and 12.9 for various strength levels
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Offered in steel, stainless steel, and alloy materials
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Ideal for automotive, construction, and industrial machinery applications
For strength, versatility, and precision, hex head cap screws deliver the dependable fastening performance trusted by professionals worldwide.