S-90323A438 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Precise alignment and secure component positioning thanks to the 4mm shoulder diameter with tight tolerance control
• High mechanical strength and durability with 80,000 psi tensile strength and Rockwell B95 hardness for demanding applications
• Reliable thread engagement with Class 6g thread fit and coarse M3x0.5 thread pitch for secure fastening
• Space-saving low-profile design featuring a hex socket low head for applications with limited clearance
• Easy installation and removal using standard 2mm hex keys for efficient assembly and maintenance
• Compliance with international environmental standards including RoHS 3 and REACH for global market acceptance

Professional Applications & Engineering Value

These precision shoulder screws are engineered to solve critical alignment challenges in industrial machinery, automation systems, and precision instruments. The 18-8 stainless steel material combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, extending service life in demanding environments. The precisely machined 4mm shoulder diameter with controlled tolerances ensures accurate component positioning and rotational stability, eliminating misalignment issues in assemblies. The hex socket low head design allows for compact installations while maintaining high torque transmission capability. These metric shoulder screws are particularly valuable in applications requiring repeated disassembly and reassembly, where the Class 6g thread fit maintains consistent performance throughout the product lifecycle.

Specification Summary & Compliance

This M3x0.5 shoulder screw features precise dimensional control with shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm. The metric thread follows standard specifications with Class 6g thread fit for reliable performance. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industries and applications.