S-90269A929 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 extended service life.
• Enhanced durability and wear resistance from the black oxide finish, providing added protection against rust and abrasion.
• Precise component alignment and pivot points enabled by the 24mm shoulder diameter with tight tolerance control.
• High-strength performance under load with a tensile strength of 70,000 psi and a minimum shear strength of 35,000 psi for reliable fastening.
• Secure, non-slip installation and adjustment thanks to the knurled head and hex socket drive for a firm grip with standard tools.
• Optimized for quick assembly with a coarse M20x2.5 thread and Class 5g6g fit, ensuring consistent engagement and reduced risk of cross-threading.
• Long-lasting structural integrity supported by Rockwell B79 hardness, maintaining dimensional stability in demanding applications.

Professional Applications & Engineering Value

This M20 shoulder screw is engineered to address critical alignment and rotational movement challenges in industrial applications. The 316 stainless steel material offers exceptional resistance to chemicals and moisture, making it suitable for machinery, automotive assemblies, and marine equipment. The 180mm shoulder length provides a stable, unthreaded bearing surface that acts as a precise axle or pivot, reducing wear on connected parts. Combined with the black oxide finish, it minimizes friction and corrosion, extending the lifespan of moving assemblies. The hex socket drive and knurled head ensure easy installation and secure handling, even in tight spaces, enhancing overall assembly efficiency and reliability for precision engineering projects.

Specification Summary & Compliance

This metric shoulder screw adheres to ISO 7379 specifications, ensuring dimensional accuracy with a shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm. The Class 5g6g thread fit guarantees precise thread engagement for reliable performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental standards for global industrial use.