S-91290A187 M4 x 55 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and reliability with Class 12.9 rating and 170,000 PSI tensile strength, ensuring secure fastening in demanding applications.
• Superior corrosion resistance provided by the black-oxide coating, extending service life in harsh industrial environments.
• Precise torque application enabled by the hex socket drive and 3 mm drive size, reducing the risk of stripping and improving installation efficiency.
• Optimized thread engagement with M4 x 0.7 mm coarse thread and Class 5g6g fit, offering quick assembly and reliable hold in various materials.
• Enhanced durability and wear resistance due to Rockwell C37 hardness, maintaining performance under repeated stress and vibration.
• Versatile partial threading design allowing for adjustable clamping force and reduced weight in assembled structures.
• Global compliance and safety with DIN 912/ISO 4762 standards, RoHS 3, and REACH, ensuring suitability for international projects and regulated industries.

Professional Applications & Engineering Value

This M4 socket head cap screw is engineered to address critical challenges in high-stress mechanical assemblies, such as machinery, automotive components, and precision equipment. The black-oxide alloy steel construction combats corrosion and wear, while the Class 12.9 strength and 170,000 PSI tensile capacity prevent failure under heavy loads and vibration. The hex drive and coarse thread facilitate quick, secure installation with standard tools, reducing assembly time and minimizing the risk of cross-threading. Ideal for applications requiring reliable fastening solutions, it ensures long-term stability in demanding environments, supported by compliance with DIN 912/ISO 4762 for consistent quality and performance.

Specification Summary & Compliance

This screw features precise metric thread dimensions with M4 x 0.7 mm coarse thread and Class 5g6g thread fit for accurate engagement. It adheres to DIN 912 and ISO 4762 manufacturing standards, ensuring dimensional consistency and reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety requirements for industrial use.