S-91290A856 M20 x 80 mm DIN 912, ISO 4762 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 and durability under repetitive loads.
• Precise Class 5g6g thread fit guarantees smooth installation and secure fastening, minimizing assembly issues.
• Partially threaded design with coarse 2.5mm pitch allows for quick engagement and optimal clamping force in heavy-duty assemblies.
• Standard 17mm hex drive and socket head profile enable easy installation with common tools, improving workflow efficiency.
• Compliance with DIN 912/ISO 4762, RoHS 3, and REACH ensures international quality and environmental safety standards are met.

Professional Applications & Engineering Value

This M20 socket head cap screw is engineered to address critical challenges in demanding industrial settings. The black-oxide alloy steel construction combats corrosion, making it ideal for machinery, automotive, and construction applications exposed to moisture or chemicals. With a Class 12.9 strength rating and 170,000 psi tensile strength, it withstands extreme vibrations and loads, preventing loosening and maintaining joint integrity. The coarse metric thread and partially threaded rod design facilitate rapid assembly in thick materials, reducing installation time while ensuring a secure fit. By adhering to DIN 912/ISO 4762 standards, this fastener delivers consistent performance, enhancing the reliability of your high-strength assemblies and minimizing downtime.

Specification Summary & Compliance

This product features precise Class 5g6g thread fit per metric standards, with a thread size of M20 and pitch of 2.5mm. It meets DIN 912 (identical to ISO 4762) manufacturing specifications for socket head cap screws, ensuring dimensional accuracy and interoperability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms adherence to environmental and safety regulations, supporting sustainable procurement practices.