S-91290A363 M8 x 170 mm DIN 912, ISO 4762, ISO 898-1 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 12.9 strength rating and Rockwell C37 hardness for reliable performance in high-stress applications
• Superior corrosion resistance from black-oxide coating on alloy steel, extending service life in demanding environments
• Precise torque transmission through 6mm hex drive and standard socket head profile, minimizing tool slippage and damage
• Optimized load distribution with M8 coarse thread (1.25mm pitch) and Class 6g thread fit, ensuring secure fastening in various materials
• Versatile partial threading design with 27mm minimum thread length, providing flexibility for both threaded and unthreaded connections
• Heavy-duty tensile strength of 170,000 PSI, capable of withstanding extreme mechanical loads without failure
• Global compliance assurance meeting DIN 912, ISO 4762, and ISO 898-1 standards for consistent quality and interchangeability

Professional Applications & Engineering Value

This high-strength socket head cap screw delivers critical engineering solutions for industrial assemblies requiring maximum reliability. The black-oxide alloy steel construction provides essential corrosion protection in manufacturing environments where exposure to moisture and chemicals is common. With its Class 12.9 rating and 170,000 PSI tensile strength, this fastener withstands extreme vibration and dynamic loads in heavy machinery, automotive systems, and precision equipment. The M8 coarse thread with 1.25mm pitch ensures rapid installation and secure holding power in both metallic and composite materials, while the partially threaded design allows for precise clamping force distribution. The hex drive socket enables high-torque installation in confined spaces, making it ideal for applications where accessibility is limited but performance cannot be compromised.

Specification Summary & Compliance

This socket head cap screw features precision Metric M8 x 1.25mm coarse threads with Class 6g tolerance for consistent fit and performance. Manufactured to DIN 912 and ISO 4762 dimensional specifications with mechanical properties meeting ISO 898-1 Class 12.9 requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.