S-91290A172 M4 x 30 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 demanding applications
• Superior corrosion resistance provided by black-oxide coating, extending service life in harsh industrial environments
• Precise torque transmission through 3mm hex drive design, ensuring secure installation and preventing tool slippage
• Optimal thread engagement with fully threaded M4 x 0.7mm coarse thread design for maximum holding power
• Industry-standard compatibility meeting DIN 912/ISO 4762 specifications for seamless integration with existing equipment
• Enhanced reliability with Rockwell C37 hardness, maintaining structural integrity under heavy loads
• Regulatory compliance assurance with RoHS 3 and REACH standards for safe, environmentally responsible manufacturing

Professional Applications & Engineering Value

Engineered for high-performance industrial applications, these M4 socket head cap screws deliver exceptional mechanical properties where failure is not an option. The black-oxide alloy steel construction provides superior corrosion resistance while maintaining the Class 12.9 strength rating critical for heavy machinery, automotive assemblies, and precision equipment. The fully threaded metric design with coarse 0.7mm pitch ensures maximum thread engagement and vibration resistance in dynamic environments. The hex drive style allows for high torque application in confined spaces, making these industrial fasteners ideal for maintenance, manufacturing, and engineering applications requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

This metric socket head cap screw features M4 x 0.7mm coarse threading with Class 5g6g thread fit tolerance for precision engagement. Manufactured to DIN 912/ISO 4762 standards with a 30mm length and standard socket head profile. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. The black-oxide surface treatment enhances corrosion protection while maintaining the screw's dimensional accuracy and mechanical properties.