S-91290A117 M3 x 12 mm 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 for reliable performance in high-stress applications
• Superior corrosion resistance provided by black-oxide coating, extending service life in demanding industrial environments
• Precise thread engagement with Class 5g6g thread fit and coarse 0.5 mm pitch ensuring secure fastening and vibration resistance
• Optimal hardness performance at Rockwell C37 for excellent wear resistance and reduced thread stripping
• Standard hex drive compatibility with 2.5 mm drive size for easy installation using common industrial tools
• Full thread coverage along the 12 mm length provides maximum grip strength and uniform load distribution
• Global compliance assurance meeting DIN 912/ISO 4762 standards for international project compatibility

Professional Applications & Engineering Value

This M3 socket head cap screw delivers exceptional engineering value through its black-oxide alloy steel construction and Class 12.9 strength rating. The combination of 170,000 psi tensile strength and Rockwell C37 hardness addresses critical industrial challenges including joint failure, vibration loosening, and material fatigue. The fully threaded design with coarse 0.5 mm pitch ensures rapid assembly while maintaining superior clamping force in machinery, automotive components, and precision equipment. The black-oxide surface treatment provides essential corrosion protection without compromising dimensional accuracy, making these metric socket screws ideal for applications requiring both mechanical reliability and environmental resistance.

Specification Summary & Compliance

This high-performance fastener features precise Class 5g6g thread fit tolerance according to DIN 912/ISO 4762 standards, ensuring consistent dimensional accuracy and reliable performance. The manufacturing process adheres to strict quality controls for metric thread specifications including M3 diameter, 0.5 mm pitch, and 12 mm length. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, confirming the absence of restricted substances while maintaining the screw's mechanical properties and corrosion-resistant characteristics.