S-90265A749 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments.
• Exceptional mechanical strength offering 70,000 psi tensile and 45,000 psi shear strength for reliable, heavy-duty fastening.
• Precise component alignment enabled by the 25mm shoulder with controlled diameter tolerance, reducing wear and misalignment.
• Secure and efficient installation with a knurled socket head and 5mm hex drive, preventing tool slippage.
• Reliable thread engagement through M8x1.25mm coarse threads with Class 5g6g fit, ensuring consistent performance.
• Enhanced durability with a Rockwell B83 hardness, providing excellent wear resistance in dynamic applications.
• 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 challenges in precision machinery and assembly lines. The 18-8 stainless steel material, combined with a black oxide finish, provides robust protection against corrosion and oxidation, extending service life in demanding conditions like automotive manufacturing or packaging equipment. The 25mm shoulder length acts as a precise pivot or spacer, minimizing friction and maintaining alignment in rotating parts such as gears and pulleys. With a coarse thread and Class 5g6g fit, it ensures quick, secure fastening while resisting vibration loosening. Ideal for applications requiring high shear strength and dimensional accuracy, this screw reduces maintenance downtime and enhances operational reliability in industrial settings.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a shoulder diameter of 10 mm with a tolerance of -0.072 to -0.01 mm and a shoulder length of 25 mm with a tolerance of 0 to 0.25 mm, ensuring accurate fits. Thread specifications include M8x1.25 mm coarse threads with a Class 5g6g fit per metric standards. It complies with ISO 7379 for manufacturing consistency and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental and safety adherence for global industrial use.