S-91502A137 M4 x 80 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 industrial applications, reducing failure risks.
• Class 12.9 alloy steel construction with Rockwell C37 hardness provides superior durability and resistance to wear and deformation.
• Blue-dyed zinc-plated finish offers enhanced corrosion resistance and visual identification for streamlined assembly processes.
• Precision metric threading (M4 x 0.7mm coarse) with Class 5g6g fit ensures consistent, secure fastening and compatibility with standard metric components.
• Partially threaded design allows for controlled clamping force and reduced risk of cross-threading in critical assemblies.
• 3mm hex socket drive enables high-torque installation with standard tools, minimizing stripping and improving efficiency.
• Compliance with DIN 912/ISO 4762 standards guarantees dimensional accuracy and interchangeability for global engineering projects.

Professional Applications & Engineering Value

Engineered for demanding environments, these M4 socket head cap screws address critical challenges in machinery, automotive, and precision equipment assembly. The Class 12.9 alloy steel core withstands extreme vibrational and dynamic loads, preventing joint loosening in high-stress applications. With a coarse thread pitch (0.7mm) and partial threading, installation is faster and more reliable, reducing assembly errors. The blue-dyed zinc plating not only resists corrosion in humid or chemical-exposed settings but also aids in part identification during quality checks. Ideal for securing motor mounts, robotic arms, and structural frames, these metric hex socket screws deliver consistent clamping force and long-term operational integrity.

Specification Summary & Compliance

This screw adheres to DIN 912 / ISO 4762 specifications, ensuring precise dimensions including a 7mm head diameter, 4mm head height, and 80mm length with a minimum thread length of 20mm. Threads conform to Class 5g6g fit for optimal engagement and tolerance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing safe use in restricted substance-sensitive industries.