S-91290A303 M2.5 x 18 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional durability and wear resistance with a Rockwell C37 hardness rating, ensuring long service life in demanding environments.
• Superior corrosion protection from the black-oxide coating on alloy steel, reducing maintenance needs and extending component lifespan.
• High tensile strength of 170,000 psi (Class 12.9) for reliable performance in heavy-duty and high-stress applications.
• Precise and secure fastening with a Class 4g6g thread fit, minimizing the risk of loosening under vibration and load.
• Easy installation with standard 2 mm hex drive, allowing for efficient assembly and disassembly with common tools.
• Full threading for maximum grip length, providing consistent clamping force along the entire 18 mm shaft.
• Compliance with international standards including DIN 912/ISO 4762, ensuring interchangeability and quality assurance.

Professional Applications & Engineering Value

This M2.5 socket head cap screw is engineered to address critical challenges in precision machinery, automotive systems, and industrial equipment. The black-oxide alloy steel construction offers enhanced corrosion resistance, vital for operations in humid or chemically aggressive settings, while the Class 12.9 strength rating and 170,000 psi tensile strength prevent failure under extreme loads. The coarse metric thread with a 0.45 mm pitch ensures quick assembly and robust holding power, reducing installation time and improving productivity. Its fully threaded design and 2 mm hex drive facilitate secure fastening in confined spaces, making it ideal for applications requiring high reliability and minimal maintenance, such as robotics, conveyor systems, and precision instruments.

Specification Summary & Compliance

This screw features a metric M2.5 x 0.45 mm coarse thread with a Class 4g6g thread fit for precise dimensional accuracy. It complies with DIN 912 and ISO 4762 standards for socket head cap screws, ensuring consistent quality and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental compliance for global industrial use.