S-90323A447 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments.
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B95 hardness for reliable performance under high-stress applications.
• Precise assembly alignment enabled by the 50mm shoulder with controlled tolerances, minimizing component misalignment and wear.
• Secure and efficient installation with a 2mm hex socket drive and low-profile head, allowing for easy access in confined spaces.
• Consistent thread engagement provided by the M3x0.5 coarse thread and Class 6g fit, reducing cross-threading risks.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility.
• Durable, smooth surface from the passivated finish, enhancing wear resistance and simplifying cleaning.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial assemblies. Made from 18-8 stainless steel with a passivated finish, it resists corrosion and oxidation, making it ideal for machinery, electronics, and automotive components exposed to moisture or chemicals. The 50mm shoulder length and 4mm shoulder diameter with tight tolerances ensure precise positioning of moving parts, reducing vibration and extending equipment life. The hex socket drive and low-profile head facilitate quick, secure fastening in space-constrained applications, while the coarse thread and Class 6g fit provide reliable thread engagement, minimizing assembly errors. By integrating high tensile strength and hardness, this M3 shoulder screw delivers consistent performance in demanding environments, supporting efficient production and maintenance.

Specification Summary & Compliance

This shoulder screw adheres to metric standards with an M3x0.5 coarse thread and Class 6g thread fit for dimensional accuracy. The shoulder features a diameter of 4 mm (tolerance: -0.025 to 0 mm) and length of 50 mm (tolerance: 0 to 0.05 mm), ensuring precise fit in assemblies. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for regulated industries. Manufactured from 18-8 stainless steel with a passivated finish, it meets high mechanical and corrosion resistance requirements.