S-91290A988 M22 x 100 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 coating on alloy steel extends service life in harsh industrial environments.
• High hardness rating (Rockwell C37) provides excellent wear resistance, maintaining thread integrity over repeated use.
• Precise hex drive design with a 17 mm socket allows for secure tool engagement and easy installation in confined spaces.
• Optimized thread fit (Class 5g6g) ensures smooth assembly and reliable clamping force in metric coarse thread applications.
• Partially threaded shank offers flexibility for applications requiring unthreaded grip length, enhancing joint stability.
• Compliance with international standards (DIN 912/ISO 4762) guarantees consistent quality and interchangeability in global projects.

Professional Applications & Engineering Value

This M22 socket head cap screw is engineered to address critical challenges in heavy-duty industrial settings, such as machinery assembly, automotive systems, and structural frameworks. The black-oxide alloy steel construction combats rust and oxidation, ideal for environments exposed to moisture or chemicals. With a coarse thread pitch of 2.5mm and Class 12.9 strength, it delivers robust clamping force and vibration resistance, minimizing loosening in dynamic loads. The partially threaded design allows precise load distribution, while the standard socket head facilitates quick installation with common hex tools, reducing downtime in maintenance and production lines.

Specification Summary & Compliance

This screw adheres to DIN 912 and ISO 4762 standards, ensuring dimensional accuracy with a Class 5g6g thread fit for consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmental and safety regulations. Key specifications include a metric coarse thread (M22 x 2.5mm), 100 mm length with a 56 mm minimum thread length, and a 33 mm head diameter for secure fastening in demanding applications.