S-90265A225 M5 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength with 70,000 psi tensile and 45,000 psi shear strength, ensuring reliable performance under high-stress conditions.
• Precise alignment and smooth rotation provided by the 35mm shoulder with controlled diameter tolerance for accurate component positioning.
• Secure and reliable fastening with Class 5g6g thread fit and coarse M5x0.8 thread pitch, offering excellent vibration resistance.
• Easy installation and removal using a standard 3 mm hex key, facilitated by the smooth socket head design.
• Enhanced durability and wear resistance from Rockwell B83 hardness, maintaining integrity through repeated use.
• Compliance with international standards including ISO 7379, RoHS 3, and REACH, ensuring quality and environmental safety for global projects.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for applications in humid or chemically aggressive environments, such as food processing, marine equipment, and outdoor machinery. The 35mm shoulder length acts as a precise pivot or spacer, reducing wear on moving parts by preventing metal-to-metal contact and ensuring accurate alignment in industrial automation and robotic linkages. Combined with the hex socket drive and Class 5g6g thread fit, it delivers secure fastening that withstands vibrations and dynamic loads, minimizing maintenance downtime and enhancing operational reliability in demanding engineering contexts.

Specification Summary & Compliance

This shoulder screw features a M5x0.8 coarse thread with Class 5g6g thread fit for standard metric applications. The shoulder diameter is manufactured to a tight tolerance of -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, ensuring high dimensional accuracy. It conforms to ISO 7379 specifications for consistent quality and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing it is free from hazardous substances and safe for various industrial uses.