S-91290A156 M48 x 140 mm DIN 912 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in the most demanding applications, reducing the risk of fastener failure.
• Superior hardness (Rockwell C37) provides excellent wear and abrasion resistance, extending the service life of the component.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance for improved durability in various industrial environments.
• 36mm hex drive and standard socket head profile allow for high torque application and easy installation with common tools, saving time and labor.
• Class 12.9 strength rating and Class 5g6g thread fit guarantee high precision and load-bearing capacity, ensuring a secure and vibration-resistant connection.
• Partially threaded design with a coarse M48x5mm thread facilitates easier alignment and faster assembly in heavy-duty structures.
• Compliance with DIN 912, RoHS 3, and REACH ensures the screw meets international quality and environmental safety standards for global projects.

Professional Applications & Engineering Value

This M48 socket head cap screw is engineered to solve critical challenges in heavy machinery, construction, and automotive assemblies where high tensile strength and vibration resistance are paramount. The black-oxide alloy steel construction combats corrosion, while the coarse metric thread (M48x5mm) and partially threaded rod design enable quick, secure fastening in high-stress joints. Its 36mm hex drive and Class 12.9 rating ensure it can withstand extreme loads without stripping, making it ideal for industrial applications like structural frames, presses, and mining equipment. By meeting DIN 912 specifications, it delivers consistent performance and interchangeability, reducing downtime and maintenance costs.

Specification Summary & Compliance

This socket head cap screw features a metric thread size of M48 with a 5mm coarse pitch and a thread fit of Class 5g6g, ensuring precise dimensional accuracy. It is manufactured in accordance with the DIN 912 standard and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety requirements.