S-91251A904 10-24 x 6 1/2" 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.
• Black-oxide coating on alloy steel provides enhanced corrosion resistance, extending service life in demanding industrial environments.
• Class 3A thread fit offers precise, secure engagement with mating parts, minimizing play and vibration loosening.
• UNC coarse threading allows for quicker assembly and disassembly, saving time in maintenance and production workflows.
• Partially threaded design with a minimum 7/8" thread length provides optimal grip and clamping force where needed.
• Hex socket drive (5/32") enables high-torque installation in confined spaces, improving assembly efficiency.
• Compliance with RoHS 3 and REACH ensures environmental and safety standards are met for global industrial applications.

Professional Applications & Engineering Value

Engineered for high-stress industrial applications, these socket head cap screws with black-oxide alloy steel construction address common challenges like corrosion and mechanical fatigue. The UNC coarse thread and Class 3A fit ensure rapid, secure fastening in machinery, automotive assemblies, and heavy equipment, where vibration resistance and durability are critical. The partially threaded rod design concentrates clamping force effectively, reducing the risk of joint failure. Ideal for use in construction, manufacturing, and aerospace sectors, these screws provide long-term reliability, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This screw meets ASTM A574 specifications, with a 10-24 UNC thread size, Class 3A thread fit for precision, and a coarse thread spacing for efficient assembly. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and health standards in industrial use.