S-90263A121 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish for long-lasting performance in harsh environments
• Precise component alignment through 4mm shoulder diameter with tight tolerance control for reliable positioning in assemblies
• High mechanical strength with 70,000 psi tensile strength and Rockwell B79 hardness to withstand demanding industrial applications
• Secure hex drive engagement with 2mm socket head design preventing cam-out and ensuring consistent torque application
• Reliable thread performance with Class 6g thread fit and coarse thread spacing for quick assembly and vibration resistance
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe use across global markets
• Optimized for precision applications featuring right-hand metric threads with controlled shoulder length tolerance for exact positioning

Professional Applications & Engineering Value

This M3 shoulder screw delivers exceptional engineering value in precision mechanical assemblies where alignment accuracy and corrosion resistance are critical. The 316 stainless steel construction with passivated finish provides superior protection against chemical exposure and atmospheric corrosion, making it ideal for medical equipment, food processing machinery, and marine applications. The precisely controlled 4mm shoulder diameter acts as a reliable locating feature, eliminating component misalignment while the socket head hex drive ensures secure tool engagement without stripping. With Class 6g thread fit and coarse thread spacing, this metric shoulder screw offers rapid assembly and maintains clamping force in vibrating environments, solving common fastening challenges in automated machinery and precision instrument manufacturing.

Specification Summary & Compliance

This precision M3 x 0.5mm shoulder screw features Class 6g thread fit per metric standards with shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm for precise positioning applications. Manufactured from 316 stainless steel with passivated finish, the fastener complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial reliability across global markets.