Fractional Size Grade 5 Hex Head Cap Screw
Fractional Size Grade 5 Hex Head Cap Screws for High-Strength Fastening
Fractional Size Grade 5 Hex Head Cap Screws are engineered to deliver reliable strength, durability, and precision in medium- to heavy-duty fastening applications. Featuring a classic six-sided hex head, these fasteners provide excellent wrench engagement and precise torque control, making them a preferred choice for industrial, automotive, agricultural, and machinery assemblies where performance under load is critical.
Engineered Strength and Heat-Treated Performance
Manufactured from medium carbon steel and heat-treated for enhanced mechanical properties, Grade 5 hex head cap screws offer a minimum tensile strength of 120,000 psi and a yield strength of 92,000 psi. This strength profile allows them to withstand higher stress, vibration, and cyclic loading compared to lower-grade fasteners. As a result, Grade 5 screws are ideal for applications such as engine components, equipment frames, drivetrain assemblies, and structural connections where consistent clamping force is essential.
Fractional Sizing and Industry Standards
These fasteners are produced in standard fractional (inch) sizes to ensure compatibility with U.S. hardware systems. Grade 5 hex head cap screws conform to ASME B18.2.1 dimensional standards and meet SAE J429 mechanical property requirements. Precision-rolled threads provide uniform load distribution, improved fatigue resistance, and dependable performance during repeated installation and removal.
Finish Options and Application Versatility
Grade 5 hex head cap screws are available in multiple finishes to suit different environments. Zinc-plated options provide added corrosion resistance for moderate exposure to moisture, while plain steel finishes offer a cost-effective solution for indoor or controlled conditions. The hex head design supports higher torque values without rounding, ensuring secure tightening and long service life.
Key Advantages of Grade 5 Hex Head Cap Screws
Heat-treated medium carbon steel construction
120,000 psi tensile strength for demanding applications
Fractional sizing for U.S. standard compatibility
Zinc-plated or plain finish options
Ideal for automotive, machinery, and industrial use
For applications requiring dependable strength and long-term reliability, Fractional Size Grade 5 Hex Head Cap Screws deliver proven performance trusted by professionals across demanding industries.