S-91290A174 M4 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 in high-stress industrial applications, reducing the risk of fastener failure.
• Class 12.9 strength rating with Rockwell C37 hardness provides superior durability and resistance to wear, extending service life in demanding environments.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance and a sleek finish, ideal for machinery and equipment assemblies.
• Fully threaded M4 x 0.7 mm coarse thread design allows for quick and secure fastening with consistent grip across the entire length.
• Precision-engineered to DIN 912/ISO 4762 standards guarantees dimensional accuracy and interchangeability, simplifying procurement and assembly processes.
• 3 mm hex drive socket head enables easy installation with standard tools, minimizing assembly time and improving workflow efficiency.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global industry standards for hazardous substance control.

Professional Applications & Engineering Value

This M4 socket head cap screw is engineered from black-oxide alloy steel to address common industrial challenges such as vibration loosening and corrosion in harsh operating conditions. The fully threaded right-hand coarse thread (M4 x 0.7 mm) provides excellent holding power and rapid installation, making it ideal for precision machinery, automotive assemblies, and heavy-duty equipment. With a Class 12.9 strength rating and high tensile capacity, it resists deformation under load, ensuring long-term reliability in critical applications. The socket head design with a 3 mm hex drive allows for compact spaces and tool accessibility, while adherence to DIN 912/ISO 4762 standards ensures consistent quality and performance across global engineering projects.

Specification Summary & Compliance

This fastener features precise metric threading with Class 5g6g thread fit for accurate engagement and tolerance control. Manufactured in compliance with DIN 912 and ISO 4762 specifications, it includes a 40 mm length, 7 mm head diameter, and 4 mm head height. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.