S-90269A918 M20 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Precise component alignment and smooth rotation ensured by the 24mm shoulder diameter with tight tolerances and a 140mm shoulder length.
• High-strength performance with a tensile strength of 70,000 psi and a minimum shear strength of 35,000 psi for reliable load-bearing in demanding assemblies.
• Secure, tamper-resistant installation provided by the 12mm hex socket drive and knurled head for superior grip and torque application.
• Guaranteed interchangeability and fit thanks to compliance with the ISO 7379 standard and Class 5g6g thread fit for consistent quality.
• Enhanced durability and minimal maintenance from the black oxide finish, which adds an extra layer of protection against wear and oxidation.
• Global compliance and environmental safety with RoHS 3 and REACH compliance, meeting international regulatory requirements.

Professional Applications & Engineering Value

This M20x2.5 metric shoulder screw is engineered to solve critical alignment and wear challenges in precision industrial applications. The 316 stainless steel material offers superior resistance to chemicals and saltwater corrosion, making it ideal for machinery, marine equipment, and food processing systems. The 24mm shoulder diameter with a precise 140mm shoulder length acts as a built-in pivot or spacer, eliminating the need for additional bushings and reducing assembly complexity. Combined with the black oxide finish and hex socket drive, it ensures reliable performance in high-stress environments, from conveyor systems to robotic arms, where corrosion resistance and dimensional stability are paramount for long-term operational efficiency.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit with a coarse M20x2.5 metric thread, ensuring reliable engagement and interchangeability. The shoulder diameter tolerance is -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, providing high dimensional accuracy. Manufactured to meet ISO 7379 specifications, it is also fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for global industrial use.