S-90269A284 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh or chemical environments.
• High mechanical strength offering 70,000 PSI tensile strength and 35,000 PSI shear strength for reliable load-bearing performance.
• Precision fit and alignment ensured by the Class 5g6g thread fit and precisely toleranced shoulder diameter for reduced assembly play.
• Secure and easy installation with a 5 mm hex socket drive and knurled head for improved grip and torque application.
• Durable and long-lasting with a Rockwell B79 hardness rating, resisting wear and deformation under stress.
• Broad industry compatibility through compliance with ISO 7379, RoHS 3, and REACH standards.
• Optimized for coarse threading with M8x1.25 thread for faster assembly and robust holding power in various materials.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and durability challenges in precision industrial applications. The 316 stainless steel material provides exceptional resistance to corrosion and oxidation, making it suitable for machinery exposed to moisture, chemicals, or outdoor conditions. The shoulder feature acts as a precise locating dowel, minimizing part movement and simplifying assembly in pivoting mechanisms, rotating assemblies, and gear mounts. Combined with the coarse metric thread and hex socket drive, it ensures quick, secure fastening with high clamp load capacity. This design is particularly valuable in automation, medical devices, and packaging equipment where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

This shoulder screw features an M8x1.25 coarse thread with Class 5g6g thread fit, ensuring dimensional accuracy and interchangeability. The shoulder diameter is toleranced between -0.072 to -0.01 mm, and shoulder length from 0 to 0.25 mm, providing precise assembly fits. Manufactured to meet ISO 7379 specifications, it is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming its adherence to international safety and environmental standards.