S-90323A601 M2 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments.
• Precise component alignment thanks to the 2mm shoulder with tight diameter tolerance, reducing assembly errors and improving product quality.
• High strength and durability with Rockwell B90 hardness and 85,000 psi tensile strength, providing reliable performance under mechanical stress.
• Space-saving low-profile socket head and 1.5mm hex drive for easy installation in confined spaces with standard tools.
• Accurate and secure fastening with Class 6g thread fit and metric coarse thread, ensuring consistent engagement and vibration resistance.
• Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global industrial applications.
• Smooth head texture minimizes friction and damage to mating surfaces during installation.

Professional Applications & Engineering Value

This M2 shoulder screw is engineered to address critical challenges in precision assemblies, such as in electronics, machinery, and automotive components. The 18-8 stainless steel material, combined with a passivated finish, offers excellent resistance to corrosion and oxidation, extending service life in demanding conditions. The low profile socket head design allows for compact installations without compromising accessibility, while the 2mm shoulder length with precise tolerances ensures accurate positioning of parts like gears, pulleys, or PCBs, reducing misalignment and wear. With a Class 6g thread fit and coarse 0.4 mm pitch, it provides quick assembly and reliable holding power, making it ideal for high-vibration environments. These features collectively enhance assembly efficiency, reduce maintenance costs, and support robust performance in industrial fastening applications.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with a thread size of M2, pitch of 0.4 mm, and Class 6g thread fit for precise dimensional accuracy. The shoulder diameter is 3 mm with a tolerance of -0.025 to 0 mm, and shoulder length is 2 mm with a tolerance of 0 to 0.05 mm, ensuring consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming its suitability for environmentally regulated industries. Manufactured from 18-8 stainless steel with a passivated finish, it supports reliable use in various engineering applications without compromising on safety or durability.