S-91290A283 M33 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 under extreme loads, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
• Precise hex drive engagement with a 24mm drive size and standard socket head profile allows for secure tooling and reduced cam-out during installation.
• High hardness rating of Rockwell C37 provides excellent wear resistance, maintaining thread integrity through repeated use.
• Full threading with coarse pitch enables faster installation and higher clamping force in a wide range of materials.
• Compliance with international standards including DIN 912/ISO 4762 ensures dimensional accuracy and interchangeability in global machinery designs.
• Environmental regulation adherence with RoHS 3 and REACH compliance supports sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

This M33 socket head cap screw is engineered for heavy-duty industrial applications where reliability is critical. The Class 12.9 high-strength alloy steel construction, combined with a black-oxide surface treatment, offers superior resistance to corrosion and wear, making it ideal for machinery, automotive assemblies, and construction equipment exposed to stressful conditions. The coarse metric thread with a 3.5mm pitch ensures quick and secure fastening in soft or hard materials, reducing assembly time while maintaining high tensile strength. Fully threaded and right-hand oriented, it provides consistent clamping force across the entire 100mm length, minimizing loosening from vibrations. By meeting DIN 912/ISO 4762 specifications, this fastener delivers precise fit and long-term durability, solving common issues like misalignment and premature failure in industrial socket head screw applications.

Specification Summary & Compliance

This product features a metric thread size M33x3.5 with a Class 5g6g thread fit for precise dimensional accuracy, adhering to DIN 912 ISO 4762 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity. The Class 12.9 strength rating and specified hardness support reliable performance in accordance with industrial manufacturing norms.