S-90265A343 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 maintenance costs.
• Enhanced torque transmission and slip resistance from the hex socket drive and knurled head, ensuring secure fastening and easier installation.
• Precise component alignment and pivot points due to the 12mm shoulder diameter with tight tolerance, minimizing assembly play and vibration.
• High mechanical strength and durability with a tensile strength of 70,000 psi and Rockwell B83 hardness, providing reliable performance under load.
• Optimized for quick assembly with a coarse M8x1.25 thread, reducing installation time in production lines.
• Consistent and reliable thread engagement ensured by Class 5g6g thread fit, preventing cross-threading and ensuring long-term joint integrity.
• Broad industrial compliance meeting ISO 7379 standards, RoHS 3, and REACH, guaranteeing safety and regulatory acceptance for global supply chains.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address common challenges in precision machinery and assembly operations. The 18-8 stainless steel material offers excellent resistance to rust and oxidation, making it suitable for applications in moist or chemically aggressive settings, such as food processing equipment or outdoor machinery. The hex socket head and knurled texture provide a non-slip grip, allowing for high-torque applications without tool slippage, which is critical in automated or manual assembly lines. The 12mm shoulder diameter and 25mm shoulder length act as a precise spacer or pivot, reducing wear on moving parts and ensuring accurate alignment in rotating assemblies like conveyor systems or robotic arms. With its coarse thread pitch, it enables faster installation, saving time in high-volume production while maintaining strong holding power. This screw is ideal for industries requiring durable, metric fasteners that comply with international standards for safety and performance.

Specification Summary & Compliance

This shoulder screw features a metric M8x1.25 coarse thread with a Class 5g6g thread fit for precise tolerance, ensuring reliable engagement. The shoulder diameter is manufactured to a tight tolerance of -0.072 to -0.01 mm, and the shoulder length has a tolerance of 0 to 0.25 mm, providing consistent dimensional accuracy. It conforms to ISO 7379 specifications for shoulder screws and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for environmentally conscious industrial applications.