S-91319A208 M6 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with nylon pellet thread locker prevents loosening in high-stress environments, maintaining assembly integrity.
• Exceptional tensile and shear strength (150,000 psi tensile, 84,000 psi shear) ensures reliable performance under heavy loads and dynamic conditions.
• Wide temperature tolerance from -50° to 250°F allows stable operation in diverse industrial climates without performance degradation.
• Precision-machined shoulder with tight diameter tolerance provides accurate alignment and smooth bearing surfaces for rotating components.
• Corrosion-resistant black oxide finish enhances durability and provides a sleek, protective layer against wear and environmental exposure.
• Easy installation and removal with 4 mm hex socket drive and knurled head for secure grip, reducing tool slippage and assembly time.
• Compliance with international standards including ISO 7379, RoHS 3, and REACH ensures quality, safety, and environmental responsibility.

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to address critical challenges in precision machinery and industrial assemblies. The alloy steel construction and black oxide finish deliver superior resistance to corrosion and mechanical stress, making it ideal for applications like robotics, automotive fixtures, and conveyor systems where alignment and vibration are concerns. The nylon pellet thread locker secures fasteners against loosening from constant motion, while the precise shoulder diameter ensures components like gears and pulleys rotate smoothly without misalignment. With a coarse metric thread and Class 5g6g fit, it offers quick installation and reliable holding power, reducing maintenance needs in demanding environments such as manufacturing equipment and aerospace components.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 for dimensional accuracy, with thread specifications including M6 x 1 mm coarse pitch and Class 5g6g fit ensuring consistent performance. The shoulder features a diameter of 8 mm with a tight tolerance of -0.049 to -0.01 mm and length of 12 mm (±0.25 mm) for precise applications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for industrial use.