S-90265A302 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and reducing replacement frequency.
• Precise component alignment and pivot function enabled by the 35mm shoulder with tight diameter tolerance, minimizing assembly play and wear.
• High mechanical strength and durability from Rockwell B83 hardness and 70,000 psi tensile strength, ensuring reliable performance under heavy loads.
• Secure, non-slip fastening provided by the knurled socket head and 5mm hex drive, allowing for high-torque installation without tool slippage.
• Consistent and reliable thread engagement with Class 5g6g thread fit and M8x1.25 coarse pitch, facilitating quicker assembly and disassembly.
• Global compliance and safety through ISO 7379 certification and RoHS 3/REACH compliance, meeting stringent international regulatory standards.
• Optimized for industrial machinery and precision equipment with its robust design, supporting smooth rotational movement and extended service life.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical challenges in industrial assembly, where precise alignment and rotational stability are paramount. The 18-8 Stainless Steel material offers excellent resistance to corrosion and oxidation, making it suitable for applications in moist or chemically aggressive environments, such as food processing, automotive, and machinery manufacturing. The 35mm shoulder length with minimal tolerance ensures accurate positioning of components like gears, pulleys, and linkages, reducing vibration and misalignment issues. Combined with the coarse thread metric design and knurled socket head, it enables efficient, high-torque installation, minimizing downtime and maintenance costs. This screw is ideal for precision equipment and moving parts, providing reliable performance and long-term operational integrity.

Specification Summary & Compliance

The screw adheres to ISO 7379 standards, ensuring dimensional accuracy and interchangeability. Thread specifications include Class 5g6g fit for consistent engagement, with a shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm for precise assembly. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of hazardous substances and supporting sustainable, safe industrial use.