S-91290A301 M8 x 190 mm DIN 912 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength for demanding applications with Class 12.9 rating and 170,000 PSI tensile strength, ensuring reliable performance under high stress.
• Superior corrosion resistance and wear protection from the black-oxide finish on alloy steel, extending service life in harsh environments.
• Precise and secure fastening with M8 x 1.25mm coarse thread and Class 5g6g fit, reducing the risk of cross-threading and improving assembly efficiency.
• High durability and load-bearing capacity due to Rockwell C37 hardness, minimizing deformation and maintaining integrity in heavy-duty use.
• Easy installation and removal with a standard 6mm hex drive and socket head design, allowing for high torque application without slippage.
• Versatile partial threading on a 190mm length, providing flexibility for applications requiring both threaded and unthreaded sections.
• Compliance with international standards including DIN 912, RoHS 3, and REACH, ensuring safety, environmental responsibility, and global acceptance.

Professional Applications & Engineering Value

This M8 socket head cap screw is engineered from black-oxide alloy steel to address common industrial challenges such as vibration loosening, corrosion, and high mechanical stress. The coarse thread metric design with a 1.25mm pitch ensures quick assembly and strong holding power in dynamic environments like machinery, automotive systems, and construction equipment. Its partially threaded configuration allows for precise clamping in assemblies where only specific sections require threading, reducing material waste and improving structural integrity. With a Class 12.9 strength rating and Rockwell C37 hardness, it withstands extreme loads and impacts, making it ideal for critical high tensile strength applications. The hex drive and standardized DIN 912 profile facilitate easy maintenance and replacement, enhancing operational efficiency in B2B settings.

Specification Summary & Compliance

This fastener adheres to precise dimensional tolerances, including a Class 5g6g thread fit for consistent engagement and a minimum thread length of 28mm. It conforms to the DIN 912 standard for socket head cap screws, ensuring compatibility with metric systems. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing it is free from hazardous substances and meets environmental safety requirements for industrial use.