S-90269A915 M20 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Enhanced durability and wear resistance from Rockwell B79 hardness, extending service life in high-stress applications
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under heavy loads
• Precise alignment and spacing provided by the 45mm shoulder with tight length tolerance (0 to 0.25mm), reducing assembly errors
• Secure, non-slip fastening thanks to the knurled head and 12mm hex socket drive, allowing for high-torque installation
• Optimized thread engagement with Class 5g6g fit and coarse 2.5mm pitch, enabling quick assembly and vibration resistance
• Regulatory compliance and safety with ISO 7379 standards, RoHS 3, and REACH, ensuring environmental and workplace safety

Professional Applications & Engineering Value

This M20 shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The 316 stainless steel material combined with a black oxide finish provides exceptional resistance to corrosion, oxidation, and chemical degradation, making it suitable for marine, food processing, and pharmaceutical applications. The 45mm shoulder length with controlled tolerances ensures accurate component positioning, eliminating misalignment and reducing wear on moving parts. The coarse metric thread (M20x2.5mm) and hex socket drive facilitate rapid installation and maintenance, while the high tensile and shear strengths support dynamic loads and rotational forces in conveyor systems, robotic arms, and assembly jigs. By integrating these features, the screw minimizes downtime and enhances operational reliability in demanding industrial settings.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 manufacturing standards, with precise dimensional controls including a shoulder diameter tolerance of -0.072 to -0.01 mm and length tolerance of 0 to 0.25 mm. The metric thread follows Class 5g6g fit specifications for consistent engagement. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring no hazardous substances are used. The product meets general industry requirements for mechanical performance and environmental safety.