S-91290A036 M18 x 50 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength – With a 170,000 psi tensile strength and Class 12.9 rating, this screw withstands extreme loads, reducing the risk of fastener failure in critical assemblies.
• Superior Corrosion Resistance – The black-oxide coating on alloy steel provides enhanced protection against rust and wear, extending service life in harsh industrial environments.
• High Hardness for Durability – Rockwell C37 hardness ensures the screw maintains its shape and thread integrity under high stress and repeated use.
• Reliable Thread Engagement – The M18 x 2.5mm coarse thread with Class 5g6g fit offers quick assembly and secure fastening, minimizing cross-threading and loosening.
• Optimized for High-Torque Applications – The 14mm hex drive and standard socket head design allow for easy installation with common tools, even in confined spaces.
• Full Threading for Maximum Grip – Fully threaded right-hand design ensures consistent clamping force along the entire 50mm length, ideal for thick materials.
• Compliance with International Standards – Meets DIN 912/ISO 4762 specifications, ensuring dimensional accuracy and interchangeability in global engineering projects.

Professional Applications & Engineering Value

This M18 socket head cap screw is engineered to address common challenges in heavy-duty machinery, automotive, and construction sectors. The Class 12.9 alloy steel construction, combined with a black-oxide surface treatment, resists corrosion and wear, making it suitable for environments exposed to moisture, chemicals, or high stress. The coarse thread pitch (2.5mm) and Class 5g6g thread fit facilitate rapid installation and reliable performance in vibrating equipment, reducing maintenance downtime. Its fully threaded, right-hand design ensures uniform load distribution, preventing joint failure in critical assemblies like engine blocks, structural frames, and industrial presses. By adhering to DIN 912/ISO 4762 standards, this screw guarantees precision and compatibility, supporting efficient B2B procurement and seamless integration into existing systems.

Specification Summary & Compliance

This product features precise metric thread dimensions with a Class 5g6g tolerance for accurate fit. It conforms to DIN 912 and ISO 4762 manufacturing standards, ensuring consistent quality and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe industrial use.