S-90269A927 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 and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for high-stress applications and reliable load-bearing performance.
• Precision alignment and secure mounting enabled by the 20mm shoulder with controlled diameter tolerance, reducing wear on mating parts.
• Easy and secure installation with a 12mm hex drive and knurled head, providing excellent grip and preventing tool slippage during torque application.
• Accurate and reliable threading with Class 5g6g thread fit and M20x2.5 coarse pitch, ensuring consistent engagement and vibration resistance.
• Enhanced durability from Rockwell B79 hardness, maintaining thread integrity and dimensional stability under repeated use.
• Global compliance and safety meeting ISO 7379, RoHS 3, and REACH standards for quality assurance and environmental responsibility.

Professional Applications & Engineering Value

This M20x2.5 shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The 316 Stainless Steel material, combined with a Black Oxide finish, provides excellent resistance to corrosion and chemicals, making it suitable for demanding environments like marine, chemical processing, and food machinery. The 20mm shoulder length and precise diameter tolerance ensure accurate component spacing and rotational alignment, reducing eccentric loads and premature wear in pulleys, gears, and linkages. The hex drive and knurled head facilitate secure tightening in confined spaces, while the Class 5g6g thread fit guarantees reliable fastening in industrial applications subject to vibrations and dynamic stresses. This screw delivers consistent performance, minimizing maintenance and downtime in automated equipment and precision engineering projects.

Specification Summary & Compliance

This shoulder screw features a Metric M20x2.5 coarse thread with Class 5g6g thread fit for precise tolerance. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring high dimensional accuracy. It is manufactured in compliance with ISO 7379 and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory standards for environmental safety and material restrictions.