S-91290A153 M36 x 300 mm DIN 912 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength – With 170,000 psi tensile capacity and Class 12.9 rating, this screw withstands extreme loads, reducing the risk of failure in demanding applications.
• Superior Durability & Corrosion Resistance – The black-oxide finish on alloy steel enhances wear resistance and provides a protective layer against rust, extending service life in harsh environments.
• Precision Thread Design – M36 x 4mm coarse right-hand threads with Class 5g6g fit ensure reliable engagement and easy installation, minimizing assembly time and errors.
• High Torque Capability – The 27 mm hex drive and standard socket head profile allow for secure tool engagement, enabling high tightening torque without stripping.
• Optimized for Heavy-Duty Use – Partially threaded design with 84 mm min thread length and 300 mm overall length offers flexibility for applications requiring both clamping and unthreaded shank strength.
• Consistent Hardness & Reliability – Rockwell C37 hardness ensures uniform performance under stress, maintaining integrity in repetitive or high-vibration settings.
• Compliance with International Standards – Meets DIN 912 specifications and is RoHS 3 & REACH compliant, ensuring safety, environmental responsibility, and global acceptability.

Professional Applications & Engineering Value

This M36 socket head cap screw is engineered to address critical challenges in heavy machinery, construction, and automotive assembly, where high tensile strength and durability are paramount. The black-oxide alloy steel construction combats corrosion and wear, ideal for outdoor or high-moisture environments. With a coarse metric thread (4mm pitch) and Class 5g6g fit, it ensures quick, secure fastening in structural joints, reducing the risk of loosening under dynamic loads. The partially threaded 300mm length provides an unthreaded shank for shear resistance, making it perfect for bolting flanges, frames, and equipment bases. Its hex drive compatibility (27mm) facilitates efficient installation with standard tools, streamlining maintenance and reducing downtime in industrial operations.

Specification Summary & Compliance

This fastener adheres to precise dimensional tolerances, including Class 5g6g thread fit per ISO standards, ensuring consistent performance in metric assemblies. It conforms to DIN 912 for socket head cap screws, guaranteeing mechanical properties and design reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable procurement practices in global supply chains.