S-90344A142 M3 x 12 mm ASTM A574 Socket Head Screws with Flat Washer

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.
• Enhanced corrosion resistance from the black-oxide finish on both the alloy steel screw and washer, prolonging service life in harsh industrial environments.
• Superior load distribution with the integrated 10 mm OD flat washer, minimizing surface damage and maintaining joint integrity under heavy loads.
• Precise Class 6g thread fit guarantees consistent engagement and ease of assembly, improving installation efficiency and reducing rework.
• High Rockwell C39 hardness provides excellent wear resistance, ensuring the screw maintains its structural integrity through repeated use.
• Convenient 2.5 mm hex drive allows for secure tool engagement and high torque application, facilitating quick and reliable fastening.
• Full compliance with ASTM A574, RoHS 3, and REACH ensures adherence to international quality and environmental standards, supporting responsible sourcing.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered to address critical challenges in demanding industrial settings. The black-oxide alloy steel construction offers superior corrosion resistance, making it ideal for applications exposed to moisture, chemicals, or outdoor elements. The coarse 0.5 mm pitch and Class 6g thread provide robust holding power and reduce cross-threading risks during assembly, enhancing operational efficiency. Paired with a flat washer, it distributes clamping force evenly, preventing damage to soft materials and maintaining joint stability in machinery, automotive, and heavy equipment. Its fully threaded design ensures consistent grip along the entire 12 mm length, delivering reliable performance in precision assemblies where vibration resistance and durability are paramount.

Specification Summary & Compliance

This metric screw features a M3 x 0.5 mm coarse thread with a Class 6g tolerance for precise fit, and is manufactured to ASTM A574 specifications for high-strength socket head cap screws. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material responsibility.