S-91290A051 M2.5 x 3 mm DIN 912 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with Class 12.9 rating and 170,000 psi tensile strength for reliable performance in demanding applications.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
• High hardness and wear resistance with Rockwell C37 hardness, maintaining thread integrity and fastener shape under heavy loads.
• Precise and secure fastening due to Class 5g6g thread fit and DIN 912 compliance, ensuring consistent engagement and reduced loosening.
• Efficient installation and removal with a 2 mm hex socket drive and standard socket head profile, allowing for high torque application in confined spaces.
• Versatile fully threaded design offering uniform clamping force along the entire 3 mm length for stable connections in various materials.
• Compliance with environmental and safety standards including RoHS 3 and REACH, making them suitable for regulated industrial and international markets.

Professional Applications & Engineering Value

These M2.5 socket head cap screws are engineered to address critical challenges in precision machinery, automotive assemblies, and heavy-duty equipment. The black-oxide alloy steel construction combats rust and oxidation, ideal for environments exposed to moisture or chemicals. With a coarse thread metric (0.45 mm pitch) and Class 5g6g thread fit, they provide quick assembly and reliable hold in metals and composites, reducing the risk of strip-out. The fully threaded right-hand thread design ensures maximum grip and vibration resistance, while the 2 mm hex drive allows for high-torque tightening in compact spaces. This combination of high tensile strength and Rockwell C37 hardness makes these screws a top choice for engineers seeking durability and precision in industrial socket screw applications, from robotics to aerospace components.

Specification Summary & Compliance

This product adheres to precise dimensional standards with a Class 5g6g thread fit per ISO metric specifications, ensuring accurate thread engagement. It conforms to the DIN 912 standard for socket head cap screws, covering head dimensions, drive style, and mechanical properties. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) is confirmed, guaranteeing the absence of hazardous substances and supporting safe industrial use. The screw is fully threaded with a coarse M2.5 x 0.45 mm thread, and its manufacturing meets the high-strength requirements for Class 12.9 fasteners, suitable for critical applications where reliability is paramount.