S-90269A737 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and chemical exposure.
• Enhanced durability and wear resistance from the Black Oxide finish, providing a protective layer against abrasion.
• Secure and non-slip fastening thanks to the knurled socket head and 5mm hex drive, ensuring reliable torque application.
• Precise component alignment and spacing with a 22mm shoulder length and tight diameter tolerance for consistent assembly.
• High mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
• Reliable coarse thread engagement with M8x1.25mm thread and Class 5g6g fit, enabling quick assembly and reduced cross-threading risk.
• Global regulatory compliance meeting ISO 7379, RoHS 3, and REACH standards for safe, sustainable use in international markets.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and assembly fixtures. The 316 Stainless Steel material provides exceptional resistance to corrosion from chemicals, moisture, and salt spray, making it suitable for marine, pharmaceutical, and food processing equipment. The Black Oxide finish not only enhances aesthetic appeal but also minimizes galling and fretting in high-cycle operations. With its knurled socket head and 5mm hex drive, it ensures secure tool engagement, reducing slippage and damage during installation. The precisely machined 22mm shoulder acts as a pivot, spacer, or bearing surface, maintaining alignment in rotating assemblies and reducing wear on connected components. This design is ideal for applications requiring repeated disassembly, where coarse threading facilitates faster servicing without compromising joint integrity.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 specifications, ensuring dimensional accuracy and performance reliability. Threads are manufactured to Class 5g6g tolerance for consistent fit, while the shoulder diameter and length maintain tight tolerances (e.g., shoulder diameter: -0.072 to -0.01 mm; shoulder length: 0 to 0.25 mm) for precise assembly. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting environmentally responsible manufacturing practices.