S-91290A105 M5 x 85 mm DIN 912 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the Black-Oxide finish on alloy steel extends service life in harsh industrial environments.
• High hardness rating of Rockwell C37 provides excellent wear resistance, maintaining thread integrity through repeated use.
• Precision Class 5g6g thread fit guarantees smooth installation and secure fastening in metric assemblies.
• Partially threaded design allows for precise clamping force control where full threading isn't required.
• Standard hex socket drive enables high-torque installation with common tools, speeding up assembly processes.
• Compliance with DIN 912, RoHS 3, and REACH ensures international quality standards and environmental safety for global projects.

Professional Applications & Engineering Value

This Class 12.9 Socket Head Cap Screw delivers critical reliability for demanding applications where failure is not an option. The Black-Oxide Alloy Steel construction provides superior protection against corrosion in manufacturing environments exposed to moisture and chemicals. With its M5 x 0.8mm coarse thread and Class 5g6g thread fit, this fastener ensures precise engagement in machinery, automotive components, and industrial equipment. The partially threaded design concentrates clamping force exactly where needed, preventing joint loosening under vibration. Engineered to DIN 912 specifications, this high-strength cap screw solves critical fastening challenges in heavy machinery, robotics, and precision equipment where dimensional stability and maximum tensile strength are paramount.

Specification Summary & Compliance

This Socket Head Cap Screw features M5 x 0.8mm metric coarse threads with Class 5g6g thread fit tolerance, ensuring precise dimensional accuracy per ISO standards. The 85mm length includes a 22mm minimum thread length on the partially threaded shank. Manufactured to DIN 912 specifications with Class 12.9 strength rating, this fastener delivers 170,000 psi tensile strength and Rockwell C37 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for international industrial applications requiring strict regulatory adherence.