S-91274A102 M3 x 6 mm ASTM B117, DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, preventing fastener failure.
• Superior corrosion resistance from the zinc-flake coating extends service life, even in harsh or outdoor environments.
• Precision Class 5g6g thread fit guarantees smooth installation and secure fastening, reducing assembly time and improving joint integrity.
• High hardness (Rockwell C37) provides excellent wear resistance, maintaining thread form and drive integrity through multiple uses.
• Compact 2.5mm hex drive and low-profile head allow for easy installation in confined spaces with standard tools.
• Fully threaded design offers consistent clamping force along the entire length, ideal for a wide range of material thicknesses.
• Compliance with international standards (DIN 912, ISO 4762) ensures interchangeability and reliability in global engineering projects.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this M3 socket head cap screw solves critical challenges in machinery, automotive, and precision equipment assembly. The zinc-flake-coated alloy steel construction provides a robust barrier against corrosion, addressing failure risks in humid or chemically aggressive environments. Its Class 12.9 strength rating and coarse thread (M3 x 0.5mm) ensure high clamp load retention and vibration resistance, preventing loosening in dynamic systems. The standard socket head profile and 2.5mm hex drive facilitate quick, high-torque installation with common tools, reducing labor time while maintaining precision. These fully threaded fasteners deliver uniform stress distribution, making them ideal for securing components in compact, high-load assemblies where reliability is non-negotiable.

Specification Summary & Compliance

This screw features M3 x 0.5mm coarse threads with a Class 5g6g tolerance for precise fit. It is manufactured to DIN 912 and ISO 4762 specifications, ensuring dimensional accuracy and performance consistency. The product meets ASTM B117 for corrosion testing, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, supporting use in regulated and eco-conscious industries.