S-90265A755 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Corrosion-resistant performance with 18-8 Stainless Steel construction and black oxide finish, ideal for harsh industrial environments.
• Precise component alignment ensured by a 45mm shoulder with controlled diameter tolerance for stable rotational movement.
• High-strength durability offering 70,000 psi tensile strength and 45,000 psi shear strength for demanding mechanical applications.
• Secure, slip-resistant installation via a knurled socket head with 5mm hex drive, preventing tool slippage under torque.
• Reliable thread engagement with Class 5g6g metric coarse threads (M8x1.25) for consistent fastening in high-vibration settings.
• Extended service life supported by Rockwell B83 hardness, resisting wear and deformation under load.
• Global compliance assurance meeting ISO 7379, RoHS 3, and REACH standards for safe, regulated use.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial machinery, automation systems, and precision assemblies. The 45mm shoulder length acts as a precise pivot or spacer, minimizing misalignment and reducing wear on moving parts. Manufactured from 18-8 Stainless Steel with a black oxide finish, it resists corrosion in humid or chemical-exposed environments, while the knurled socket head and 5mm hex drive ensure firm tool grip during installation, preventing damage in high-torque scenarios. Its Class 5g6g thread fit and coarse pitch provide quick, secure fastening, making it a reliable choice for heavy-duty fasteners in robotics, conveyor systems, and fixture designs where precision and durability are paramount.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 specifications, with a shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm for precise dimensional control. Threads are metric M8x1.25 coarse with a Class 5g6g fit, ensuring compatibility with standard nuts and threaded holes. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory acceptance in global markets.