S-91290A163 M48 x 300 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 heavy-duty applications, preventing fastener failure under extreme loads.
• Superior corrosion resistance from the black-oxide finish on alloy steel extends service life and maintains integrity in harsh industrial environments.
• High hardness rating (Rockwell C37) provides excellent wear resistance, reducing thread damage and maintaining clamping force over repeated use.
• Precise Class 5g6g thread fit offers consistent engagement and ease of assembly, minimizing the risk of cross-threading in metric coarse thread applications.
• Robust 36mm hex drive and standard socket head allows for high torque application and secure installation with common tools, enhancing operational efficiency.
• Partially threaded design with 108mm min thread length provides optimal grip and shear strength where needed, ideal for components requiring precise clamping.
• Compliance with DIN 912, RoHS 3, and REACH ensures adherence to international quality and environmental standards, supporting global supply chain requirements.

Professional Applications & Engineering Value

This M48x5mm Class 12.9 Socket Head Cap Screw is engineered to address critical challenges in heavy machinery, construction, and automotive sectors where high tensile strength and durability are paramount. The black-oxide alloy steel construction combats corrosion, reducing maintenance costs in exposed or humid conditions, while the metric coarse thread with a 5mm pitch ensures quick assembly and reliable holding power. Its partially threaded rod design concentrates strength at key stress points, preventing loosening under vibration. By meeting DIN 912 specifications, it guarantees dimensional accuracy and compatibility with standard components, making it a trusted choice for engineers seeking high-performance fastening solutions that enhance safety and longevity in industrial setups.

Specification Summary & Compliance

This product features a Class 5g6g thread fit per metric standards, ensuring precise tolerance for consistent performance. It complies with DIN 912 for dimensional accuracy, including head diameter, drive size, and thread specifications. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for hazardous substances. The strength class 12.9 and material properties align with industry norms, providing assurance for engineering applications requiring high reliability.