S-91251A247 10-24 x 1" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Corrosion-resistant black-oxide coating on alloy steel extends service life in demanding industrial environments, minimizing maintenance needs.
• Precise Class 3A thread fit with coarse UNRC threads provides superior engagement and vibration resistance for secure, long-lasting assemblies.
• Hex socket drive design allows for high-torque installation in confined spaces, improving assembly efficiency and reducing tool slippage.
• Full threading along the 1" length offers consistent clamping force and versatility in various material thicknesses.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency and environmental safety for global supply chain integration.
• Optimized hardness (Rockwell C37) balances durability with machinability, resisting wear while allowing for precise installation.

Professional Applications & Engineering Value

These black-oxide alloy steel socket head cap screws are engineered to address critical challenges in industrial assembly, such as vibration loosening and corrosion in harsh conditions. The coarse UNRC threads with a Class 3A fit deliver excellent grip in soft materials or where rapid installation is needed, reducing assembly time without compromising strength. The hex drive and standard socket head profile enable easy access in tight spaces, making them ideal for machinery, automotive, and aerospace applications. With high tensile strength and corrosion resistance, they provide long-term reliability in dynamic loads and exposed environments, ensuring reduced downtime and maintenance costs.

Specification Summary & Compliance

This fastener adheres to ASTM A574 specifications, with a Class 3A thread fit for precise dimensional accuracy and UNRC coarse threads (10-24 size). It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability. The screw features a right-hand thread direction, fully threaded design, and meets defined mechanical properties including 170,000 psi tensile strength and Rockwell C37 hardness.