S-91274A131 M5 x 20 mm ASTM B117, DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with Class 12.9 rating and 170,000 psi tensile strength, ideal for high-stress applications.
• Superior corrosion resistance provided by zinc-flake coating, extending service life in harsh industrial environments.
• Precise and reliable fastening with metric M5 coarse thread (0.8mm pitch) and Class 5g6g thread fit for consistent performance.
• Easy installation and removal using a standard 4mm hex drive, minimizing tool slippage and damage.
• High hardness (Rockwell C37) ensures excellent wear resistance and maintains thread integrity under heavy loads.
• Fully threaded design allows for maximum grip and uniform clamping force along the entire 20mm length.
• Compliance with international standards including DIN 912 and ISO 4762, ensuring quality and interchangeability.

Professional Applications & Engineering Value

This M5 socket head cap screw is engineered to address critical challenges in demanding industrial settings. The zinc-flake-coated alloy steel construction provides outstanding corrosion resistance, making it suitable for applications exposed to moisture, chemicals, or outdoor conditions. With a Class 12.9 strength rating and high tensile strength, it reliably handles heavy loads in machinery, automotive assemblies, and construction equipment without failure. The coarse thread (0.8mm pitch) and precise Class 5g6g thread fit ensure quick, secure fastening, reducing assembly time and preventing loosening from vibrations. Its 4mm hex drive allows for efficient torque application in confined spaces, enhancing productivity in automated or manual installations. Ideal for high-strength metric screw requirements, this fastener delivers long-term reliability and performance in rigorous engineering applications.

Specification Summary & Compliance

This product features a metric thread size M5 x 0.8mm with a Class 5g6g thread fit and right-hand thread direction, ensuring dimensional accuracy per ISO standards. It complies with DIN 912 and ISO 4762 specifications for socket head cap screws, along with ASTM B117 for corrosion testing. The screw is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.