S-90269A930 M20 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for heavy-duty, high-stress applications.
• Precise alignment and smooth rotation ensured by the 24mm shoulder diameter with tight tolerance, reducing wear on mating parts.
• Secure, non-slip installation provided by the knurled head and 12mm hex drive, allowing for high-torque application without tool slippage.
• Reliable thread engagement with Class 5g6g thread fit and coarse M20x2.5 thread, ensuring consistent performance and easy assembly.
• Enhanced durability and minimal maintenance from the black oxide finish, which adds an extra layer of protection against corrosion and abrasion.
• Global compliance and quality assurance with ISO 7379 standards and RoHS/REACH environmental regulations, guaranteeing safety and interoperability.

Professional Applications & Engineering Value

This M20 shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy industrial equipment. The 316 stainless steel material provides excellent resistance to corrosion and high temperatures, making it suitable for marine, chemical processing, and food-grade environments. The 25mm shoulder length and precise 24mm shoulder diameter act as a pivot or spacer, ensuring accurate alignment of components and reducing shear stress on the M20x2.5 coarse thread. Combined with the black oxide finish, it minimizes friction and wear, extending the lifespan of assemblies. The hex drive and knurled head facilitate secure installation in confined spaces, enhancing efficiency in automated production lines and robotic systems where reliability is paramount.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit per metric standards, with a shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm for high precision. It complies with ISO 7379 manufacturing specifications, ensuring dimensional accuracy and performance consistency. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for global industrial use.