S-90269A298 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extended service life
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B79 hardness for reliable performance under high stress
• Precise component alignment enabled by the 110mm shoulder with controlled diameter tolerance for smooth assembly and reduced wear
• Secure and easy installation with a 5mm hex socket drive and knurled head for superior grip and torque application
• Reliable thread engagement with Class 5g6g fit and coarse M8x1.25mm thread for quick assembly and vibration resistance
• Global compliance assurance meeting ISO 7379 standards, RoHS 3, and REACH for safe, regulated use in international markets
• Robust shear resistance with a minimum shear strength of 35,000 psi for enhanced joint integrity in dynamic applications

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and durability challenges in industrial assemblies. The 316 Stainless Steel material provides excellent resistance to corrosion from chemicals, moisture, and salt, making it suitable for marine, chemical processing, and food industry equipment. The precision-machined 110mm shoulder acts as a sturdy shaft for locating parts like gears, bearings, and pulleys, eliminating the need for separate spacers and reducing assembly time. The coarse metric thread (M8x1.25mm) ensures fast installation and maintains hold in vibrating machinery. With a knurled head and hex drive, it offers secure handling even in greasy conditions, enhancing operator efficiency and reducing the risk of tool slippage during tightening.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit per metric standards, ensuring precise and consistent threading. The shoulder diameter tolerance is controlled between -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, providing high dimensional accuracy for reliable performance. It is manufactured in compliance with ISO 7379 specifications and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, confirming its adherence to environmental and safety regulations for industrial use.