S-90323A215 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel and passivated finish, ensuring long-term reliability in harsh environments.
• Precise component alignment thanks to the precisely machined shoulder with controlled diameter and length tolerances for secure positioning.
• High-strength performance delivering 80,000 psi tensile strength and Rockwell B95 hardness for dependable load-bearing in demanding applications.
• Secure, low-profile installation with a hex socket low head design that provides reliable torque transfer while minimizing protrusion.
• Consistent thread engagement with Class 6g fit and M3x0.5 coarse thread for quick assembly and vibration resistance.
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, supporting use in regulated industries and global markets.
• Versatile metric sizing with 4mm thread length and 10mm shoulder length, ideal for standardized industrial equipment and machinery.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and fastening challenges in precision assemblies. The 18-8 stainless steel construction, 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 hex socket drive and low head profile allow for compact designs and easy access in confined spaces, while the precise shoulder fit ensures accurate component positioning, reducing misalignment and assembly errors. With a coarse thread and Class 6g thread fit, it offers reliable performance in high-vibration applications, enhancing operational efficiency and reducing maintenance needs.

Specification Summary & Compliance

This shoulder screw features metric dimensions including an M3x0.5 thread with Class 6g tolerance, a shoulder diameter of 4 mm (tolerance: -0.025 to 0 mm), and shoulder length of 10 mm (tolerance: 0 to 0.05 mm). It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial use.