S-90323A213 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for long-lasting performance in harsh environments.
• Exceptional strength and durability provided by Rockwell B95 hardness and 80,000 psi tensile strength, ensuring reliable performance under load.
• Precise component alignment enabled by the accurately machined shoulder with a diameter of 4mm and length of 6mm, minimizing assembly play.
• Secure and efficient installation using the 2mm hex socket drive and low-profile head, ideal for applications with limited space.
• Reliable coarse thread engagement with M3 x 0.5mm Class 6g thread fit, ensuring robust fastening and vibration resistance.
• Compliance with stringent regulations including RoHS 3 and REACH, making it suitable for global industrial and electronic applications.
• Optimized for automated assembly due to its consistent right-hand thread and precise dimensional tolerances.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and strength challenges in precision assemblies. Manufactured from 18-8 Stainless Steel with a passivated finish, it offers excellent resistance to corrosion and wear, making it ideal for machinery, automotive, and electronics where environmental factors are a concern. The precise shoulder fit (4mm diameter, 6mm length) acts as a pivot or spacer, ensuring accurate component positioning and reducing stress on threaded sections. The hex socket drive and low-profile head allow for secure tightening in confined spaces, while the coarse metric thread (M3 x 0.5mm) provides quick, durable fastening. These features collectively enhance assembly reliability, minimize maintenance, and support efficient production in industrial applications.

Specification Summary & Compliance

This shoulder screw features a Class 6g thread fit per metric standards, ensuring precise thread engagement. The shoulder diameter tolerance is -0.025 to 0 mm, and shoulder length tolerance is 0 to 0.05 mm, guaranteeing high dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its suitability for use in regulated industries without hazardous substances.