S-91251A356 10-32 x 9/16" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in critical assemblies.
• Precise Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in dynamic or high-vibration industrial environments.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable, non-galling surface, extending service life in demanding applications.
• Fine UNF thread spacing allows for finer adjustments and improved clamping force distribution, ideal for precision machinery and equipment.
• Hex socket drive design enables high-torque installation with standard tools, facilitating efficient assembly and reducing installation time.
• Full threading along the entire length ensures maximum grip and versatility, accommodating various material thicknesses without compromising hold.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material consistency and environmental safety, meeting stringent industrial and regulatory standards.

Professional Applications & Engineering Value

Engineered for high-stress industrial applications, this black-oxide alloy steel socket head cap screw addresses common challenges like vibration-induced loosening and corrosion in machinery, automotive, and aerospace assemblies. The 10-32 UNF fine thread with Class 3A fit ensures tight tolerances and reliable fastening in precision equipment, reducing maintenance needs. With a Rockwell C37 hardness and robust hex drive, it withstands repeated torque applications without stripping, making it ideal for critical fastening solutions where durability and compliance with standards like ASTM A574 are paramount. The fully threaded design enhances flexibility in assembly, providing consistent performance across varied industrial settings.

Specification Summary & Compliance

This screw adheres to Class 3A thread fit for precise dimensional accuracy under UNF thread standards, ensuring reliable engagement. Manufactured in compliance with ASTM A574 specifications for material integrity, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental and safety standards for industrial use.