S-90269A931 M20 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 stainless steel construction and black oxide finish, ideal for harsh industrial environments
• Precise alignment and smooth rotation thanks to the 90mm shoulder length with tight ±0.25mm tolerance for reliable assembly
• High mechanical strength delivering 70,000 psi tensile and 35,000 psi shear strength for demanding applications
• Secure and non-slip installation with a knurled socket head and 12mm hex drive for easy torque application
• Accurate and durable thread engagement with M20x2.5 coarse Class 5g6g threads ensuring long-term performance
• Compliance with international standards including ISO 7379, RoHS 3, and REACH for quality and environmental safety
• Optimized for repetitive use with a Rockwell B79 hardness and standard shoulder fit for consistent operation

Professional Applications & Engineering Value

This M20 shoulder screw is engineered to address critical alignment and durability challenges in precision machinery, automation systems, and heavy-duty equipment. The 316 stainless steel material, combined with a black oxide finish, provides superior resistance to corrosion, oxidation, and chemical exposure, making it suitable for food processing, marine, and chemical industries. The 90mm shoulder length with minimal tolerance ensures exact positioning of moving parts, reducing wear and preventing misalignment. With a coarse thread and Class 5g6g fit, it offers quick assembly and reliable fastening under high vibration, while the knurled socket head enhances grip during installation. Ideal for use in industrial shoulder screw applications such as conveyor systems, robotic arms, and precision instruments, this component delivers long-term reliability and reduces maintenance costs.

Specification Summary & Compliance

This metric shoulder screw adheres to ISO 7379 standards, with precise dimensions including a shoulder diameter tolerance of -0.072 to -0.01 mm and length tolerance of 0 to 0.25 mm. The M20x2.5 coarse thread follows Class 5g6g fit for consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.