S-90344A147 M5 x 6 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 under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Enhanced corrosion resistance from the black-oxide finish on both the alloy steel screw and washer, prolonging service life in harsh industrial environments.
• Precise Class 6g thread fit with coarse pitch (0.8mm) enables quick and secure installation, minimizing assembly time and improving operational efficiency.
• Integrated flat washer (15mm OD, 1.8mm thick) distributes load evenly, preventing surface damage and maintaining joint integrity under vibration or dynamic loads.
• Rockwell C39 hardness provides superior wear resistance, ensuring the screw and drive socket withstand repeated use without stripping or deformation.
• 4mm hex drive socket head allows for high-torque application with standard tools, offering secure fastening in confined spaces.
• Full threading (M5 x 6mm) ensures consistent grip along the entire length, ideal for applications requiring uniform clamping force.

Professional Applications & Engineering Value

This M5 socket head cap screw with an integrated flat washer is engineered to address critical challenges in industrial assembly, such as vibration loosening and corrosion. The black-oxide alloy steel construction, combined with a coarse thread pitch (0.8mm), ensures rapid installation and reliable performance in machinery, automotive, and heavy equipment. The fully threaded design and Class 6g fit provide precise alignment and clamping force, reducing the need for rework. By integrating the washer, it simplifies inventory and assembly processes, making it a cost-effective solution for high-volume production lines where durability and compliance with environmental standards are paramount.

Specification Summary & Compliance

This screw features a metric M5 thread with a 0.8mm coarse pitch and Class 6g tolerance for precise fit. It is manufactured in accordance with ASTM A574 specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting sustainable and safe industrial practices.