S-91290A306 M4 x 15 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 applications, reducing the risk of fastener failure.
• Superior hardness rating of Rockwell C37 provides excellent wear resistance and durability for extended service life.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance, ideal for harsh industrial environments.
• Precision Class 12.9 strength rating guarantees consistent performance in critical assemblies requiring high load-bearing capacity.
• Standard hex socket drive (3mm) allows for easy installation and removal with common tools, minimizing assembly time.
• Coarse thread pitch (0.7mm) facilitates quick engagement and secure fastening in a wide range of materials.
• Full compliance with DIN 912/ISO 4762 ensures dimensional accuracy and interchangeability with global metric standards.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M4 socket head cap screws combine black-oxide alloy steel construction with a Class 12.9 strength rating to address critical challenges in machinery, automotive, and heavy equipment assembly. The fully threaded design with right-hand coarse threads ensures rapid installation and high clamp load retention, reducing vibration-induced loosening. The 3mm hex drive and standardized socket head profile provide secure tool engagement, minimizing strip-out risks during high-torque applications. This metric screw is ideal for precision engineering where 170,000 psi tensile strength and consistent performance under dynamic loads are essential, offering reliable fastening in structural components, motor mounts, and production fixtures.

Specification Summary & Compliance

This screw adheres to Class 4g6g thread fit tolerances per ISO metric standards, ensuring precise thread engagement and interchangeability. Manufacturing conforms to DIN 912/ISO 4762 specifications for dimensional accuracy, including head diameter (7mm), length (15mm), and drive size. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms the absence of restricted substances, making it suitable for regulated industrial and export markets.