S-90323A211 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments and extended service life
• Exceptional mechanical strength delivering 80,000 psi tensile strength and Rockwell B95 hardness for reliable performance in demanding applications
• Precise component alignment enabled by the 4mm shoulder with tight diameter and length tolerances, reducing assembly errors and improving product quality
• Space-saving low-profile socket head with 2mm hex drive allows for compact designs and easy installation in confined spaces
• Consistent thread engagement with Class 6g fit and M3x0.5 coarse thread, ensuring secure fastening and vibration resistance
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in various industrial and consumer products
• Optimized for right-hand threading applications with standard metric coarse pitch for efficient assembly and disassembly

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and wear, making it suitable for automotive, electronics, and machinery sectors where environmental factors are a concern. The low profile socket head design minimizes protrusion, allowing seamless integration into compact devices and reducing the risk of interference. With a precise shoulder fit and Class 6g thread fit, it ensures accurate positioning of moving parts, such as in bearings, gears, and linkages, thereby enhancing overall system reliability and reducing maintenance needs. This metric shoulder screw is a robust solution for applications requiring high strength, dimensional accuracy, and long-term performance.

Specification Summary & Compliance

This shoulder screw features a M3x0.5 coarse thread with Class 6g thread fit for standard metric applications. The shoulder diameter is 4mm with a tolerance of -0.025 to 0 mm, and shoulder length is 4mm with a tolerance of 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 use in products with strict environmental and safety requirements. Manufactured to high standards, it supports reliable performance in various industrial settings.