S-90269A926 M20 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and Black Oxide finish, ideal for harsh industrial environments.
• High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable, heavy-duty applications.
• Precise shoulder fit with a 170mm length and tight tolerances, ensuring accurate alignment and reduced assembly vibration.
• Enhanced grip and torque application from the knurled socket head and 12mm hex drive, minimizing slippage during installation.
• Consistent thread performance with M20x2.5 coarse threads and Class 5g6g fit, providing secure fastening and ease of use.
• Hardened durability at Rockwell B79, maintaining integrity under repeated stress and extending service life.
• Global compliance assurance meeting ISO 7379, RoHS 3, and REACH standards for quality and environmental safety.

Professional Applications & Engineering Value

This M20 shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The 316 Stainless Steel material, combined with a Black Oxide finish, provides exceptional resistance to corrosion and oxidation, making it suitable for demanding environments like marine, chemical processing, and outdoor applications. The 170mm shoulder length with minimal tolerance ensures exact component alignment, reducing wear and misalignment in assemblies such as rotating shafts, linkages, and bearing supports. The knurled socket head and hex drive design allow for high-torque installation without tool slippage, enhancing efficiency in automated or manual fastening processes. By integrating these features, this metric shoulder screw delivers reliable performance, minimizes maintenance downtime, and supports robust engineering solutions across various industrial sectors.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a Class 5g6g thread fit for consistent engagement and a shoulder diameter tolerance of -0.072 to -0.01 mm with a length tolerance of 0 to 0.25 mm, ensuring high accuracy in assembly. It conforms to ISO 7379 for metric shoulder screw specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity in global markets.