S-91274A109 M3 x 20 mm ASTM B117, DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional Strength & Reliability: Class 12.9 rating and 170,000 psi tensile strength ensure superior performance in high-stress applications, preventing fastener failure.
• Superior Corrosion Resistance: Zinc-flake coating provides excellent protection against rust and environmental degradation, extending service life in demanding conditions.
• High-Precision Threading: M3 x 0.5mm coarse thread with Class 5g6g fit ensures reliable engagement and consistent clamping force.
• Optimized for High-Torque Applications: Hex socket drive and 2.5 mm drive size allow for secure tool engagement and efficient installation in confined spaces.
• Maximum Material Durability: Alloy steel construction with Rockwell C37 hardness offers outstanding wear resistance and long-term structural integrity.
• Guaranteed Compliance & Quality: Manufactured to ISO 4762 and DIN 912 standards, ensuring dimensional accuracy and interchangeability.
• Broad Industrial Suitability: Fully threaded, right-hand design provides versatile fastening for a wide range of assemblies.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered for high-stress industrial applications where failure is not an option. The zinc-flake-coated alloy steel construction directly addresses common challenges like corrosion and material fatigue, significantly extending the lifespan of machinery and equipment. The Class 12.9 strength rating and 170,000 psi tensile strength provide a critical safety margin in dynamic load environments, from heavy machinery to precision automotive assemblies. The hex socket drive and standard head profile enable high torque application and reliable fastening in spaces where wrench clearance is limited. This combination of high tensile strength, superior corrosion resistance, and precise metric coarse threading delivers unmatched reliability for engineers specifying industrial fasteners for critical joints.

Specification Summary & Compliance

This screw features an M3 x 0.5mm coarse thread with a Class 5g6g thread fit, ensuring precise dimensional accuracy. It is manufactured in compliance with ISO 4762 and DIN 912 specifications. The product meets corrosion resistance testing per ASTM B117 and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.