S-91251A289 10-32 x 3 3/4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments.
• Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress applications.
• Precise Class 3A thread fit guarantees secure, vibration-resistant fastening with minimal risk of loosening.
• High hardness (Rockwell C37) provides excellent wear resistance and durability for repeated use.
• Hex socket drive design allows for easy installation and removal in confined spaces with standard tools.
• Compliance with ASTM A574 ensures consistent quality and performance in line with industrial standards.
• RoHS 3 and REACH compliant for safe use in regulated industries without hazardous substances.

Professional Applications & Engineering Value

This 10-32 UNF socket head cap screw is engineered to address critical challenges in industrial assembly, such as vibration-induced loosening and material fatigue. Crafted from black-oxide alloy steel, it offers enhanced corrosion protection, making it ideal for machinery, automotive, and aerospace applications where exposure to harsh conditions is common. The fine thread spacing and Class 3A thread fit provide superior clamping force and resistance to dynamic loads, ensuring long-term reliability. Its partially threaded design allows for precise grip adjustment, while the hex drive facilitates efficient installation in tight spaces, reducing assembly time and improving productivity in B2B procurement scenarios.

Specification Summary & Compliance

This screw adheres to UNF fine thread standards with a Class 3A thread fit for high precision. It meets ASTM A574 specifications, ensuring consistent manufacturing quality. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from restricted substances, supporting safe and sustainable industrial use.