S-91290A136 M3 x 40 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 high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance provided by the black-oxide coating extends service life and maintains integrity in harsh industrial environments.
• Precise hex drive engagement with a 2.5mm drive size allows for secure tightening and easy installation, minimizing tool slippage and damage.
• High hardness rating of Rockwell C37 enhances wear resistance and durability, ensuring long-term functionality and reduced replacement needs.
• Optimized thread design with coarse pitch and Class 5g6g fit promotes quick assembly and secure fastening, improving efficiency in production lines.
• Partially threaded shank provides focused clamping force where needed, enhancing joint stability without unnecessary thread engagement.
• Compliance with international standards including DIN 912/ISO 4762 ensures consistent quality and interchangeability, simplifying procurement and inventory management.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered from black-oxide alloy steel to address common industrial challenges such as vibration loosening and environmental degradation. The Class 12.9 strength rating and coarse thread design ensure reliable performance in high-load assemblies, from machinery to automotive components, where precise torque and fatigue resistance are critical. The hex drive facilitates easy access in confined spaces, reducing installation time and labor costs. By meeting rigorous standards like DIN 912 and ISO 4762, it provides a dependable solution for engineers seeking durability and compliance in metric screw applications, ultimately minimizing downtime and maintenance expenses.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances, including a Thread Fit of Class 5g6g per metric standards, ensuring consistent thread engagement and performance. It conforms to DIN 912 ISO 4762 for manufacturing specifications, guaranteeing reliability in industrial fasteners. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, affirming its safety and environmental responsibility for global supply chains.