S-91290A289 M42 x 180 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength with Class 12.9 rating (170,000 PSI) ensures reliable performance in high-stress applications
• Superior corrosion resistance through black-oxide coating extends service life in demanding environments
• Precision hex drive engagement with 32mm drive size provides secure installation and prevents tool slippage
• Optimized thread design with coarse 4.5mm pitch enables faster assembly and reduced installation time
• High hardness rating (Rockwell C37) maintains thread integrity and prevents deformation under heavy loads
• Partially threaded design allows for precise clamping force distribution across connected components
• International standard compliance with DIN 912/ISO 4762 ensures interchangeability and quality consistency

Professional Applications & Engineering Value

This M42 socket head cap screw delivers critical engineering solutions for heavy machinery, industrial equipment, and structural applications where failure is not an option. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining the Class 12.9 high-tensile strength required for demanding load-bearing scenarios. The coarse metric thread with 4.5mm pitch ensures rapid assembly in thick materials and high-vibration environments, while the 32mm hex drive accommodates standard industrial tools for efficient installation. The partially threaded configuration concentrates clamping force precisely where needed, making it ideal for precision engineering applications requiring exact positioning and secure fastening in manufacturing, construction, and heavy equipment maintenance.

Specification Summary & Compliance

This fastener meets DIN 912 / ISO 4762 specifications with Class 5g6g thread fit tolerance ensuring precision threading compatibility. The 180mm overall length with 96mm minimum thread length provides optimal engagement for thick-section assemblies. Manufacturing compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming safe use across regulated industries. The right-hand thread direction with metric coarse threading follows international mechanical engineering standards for reliable performance in global applications.