S-91502A401 M8 x 40 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 12.9 alloy steel construction, offering superior resistance to high stress and fatigue in demanding applications.
• Enhanced corrosion protection from the blue-dyed zinc plating, ensuring long-term reliability in harsh or exposed industrial environments.
• Optimal torque transmission via the 6mm hex socket drive, minimizing cam-out and enabling precise installation with standard tools.
• Reliable thread engagement with a coarse 1.25mm pitch and Class 5g6g fit, providing secure fastening and vibration resistance.
• Versatile partial threading design allows for adjustable clamping force and is ideal for components requiring precise positioning.
• High tensile strength of 170,000 PSI and Rockwell C37 hardness, ensuring the screw withstands extreme loads without failure.
• Broad compatibility with DIN 912/ISO 4762 standards, guaranteeing interchangeability and performance in global engineering projects.

Professional Applications & Engineering Value

These M8 socket head cap screws are engineered to address critical challenges in heavy machinery, automotive assemblies, and precision equipment. The blue-dyed zinc-plated alloy steel provides a robust barrier against rust and chemical exposure, extending service life in corrosive settings. With a Class 12.9 strength rating and coarse thread design, they deliver superior clamp load retention under dynamic stresses, reducing maintenance needs. The partially threaded configuration enables exact alignment in jigs and fixtures, while the hex socket drive ensures efficient installation in confined spaces. Ideal for high-vibration environments, these screws enhance structural integrity and operational safety across industrial applications.

Specification Summary & Compliance

This metric socket head cap screw features precise dimensions: M8 x 1.25mm thread with a Class 5g6g tolerance for consistent fit, 40mm length, and 13mm head diameter. Manufactured to DIN 912/ISO 4762 specifications, it ensures reliable performance in mechanical systems. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and use in regulated industries.