S-91306A297 3/8"-24 x 1" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated alloy steel construction, extending service life in demanding environments
• Exceptional load-bearing capacity with 120,000 psi tensile strength and Rockwell C39 hardness for reliable performance under high stress
• Precise thread engagement with Class 3A UNF fine threads ensuring vibration resistance and secure fastening in critical assemblies
• Easy installation and removal using standard 7/32" hex drive tools, reducing assembly time and labor costs
• Full thread coverage along the 1" length provides maximum grip strength and uniform stress distribution
• Low-profile rounded button head design minimizes protrusion while maintaining high torque capability
• Regulatory compliance assurance meeting ASME B18.3, ASTM F835, RoHS 3, and REACH standards for global market acceptance

Professional Applications & Engineering Value

This 3/8"-24 UNF Class 3A zinc-plated alloy steel rounded head screw delivers critical performance in precision engineering applications where vibration resistance and structural integrity are paramount. The fine thread spacing and Class 3A thread fit provide superior clamping force retention in machinery, automotive components, and industrial equipment subjected to dynamic loads. The zinc-plated surface treatment offers reliable protection against corrosion in manufacturing environments, while the fully threaded design ensures consistent engagement depth across varied material thicknesses. The combination of 120,000 psi tensile strength and hex drive compatibility makes these industrial fasteners ideal for high-stress assembly applications requiring both durability and efficient installation.

Specification Summary & Compliance

This precision fastener maintains Class 3A thread tolerances per UNF standards with fine thread spacing and right-hand threading. Manufacturing complies with ASME B18.3 and ASTM F835 specifications, ensuring dimensional accuracy and performance reliability. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial components.