S-90265A183 M3 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
• Precise component alignment with a consistent 18mm shoulder length, minimizing assembly errors and improving production efficiency.
• High-strength performance offering 70,000 psi tensile strength and 45,000 psi shear strength for demanding mechanical applications.
• Secure, slip-resistant fastening enabled by the knurled head and hex socket drive, providing excellent torque transmission.
• Reliable thread engagement with a Class 5g6g thread fit and coarse M3x0.5 pitch for quick assembly and vibration resistance.
• Broad industrial compliance meeting ISO 7379 standards, ensuring interchangeability and quality for global engineering projects.
• Environmentally safe material that is RoHS 3 and REACH compliant, supporting sustainable manufacturing initiatives.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to solve critical alignment and durability challenges in precision industrial applications. Manufactured from 18-8 stainless steel, it provides excellent resistance to corrosion and oxidation, making it ideal for machinery, automation systems, and electronic enclosures exposed to moisture or chemicals. The 18mm shoulder length acts as a precise pivot or spacer, ensuring accurate positioning of moving parts like gears and pulleys, which reduces wear and maintenance. The hex socket drive and knurled head allow for high-torque installation without slippage, while the coarse metric thread facilitates rapid assembly in high-volume production. By integrating a Class 5g6g thread fit, this screw maintains tight tolerances, preventing loosening under dynamic loads and enhancing the lifespan of assembled components.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 for dimensional consistency, with a thread fit of Class 5g6g and a shoulder diameter tolerance of -0.072 to -0.01 mm. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of hazardous substances. The metric thread (M3x0.5) and standardized socket head profile guarantee compatibility with global industrial specifications.