S-90263A123 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish for extended service life in harsh environments
• Precise component alignment through controlled shoulder diameter and length tolerances for reliable assembly fit
• High mechanical strength with 70,000 psi tensile strength and Rockwell B79 hardness for demanding applications
• Secure torque transmission via 2mm hex socket drive that prevents stripping and ensures consistent fastening
• Reliable thread engagement with Class 6g metric thread fit and coarse pitch for quick assembly and vibration resistance
• Smooth surface operation from polished head texture that minimizes friction during rotation
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This precision shoulder screw delivers exceptional value in applications requiring exact component positioning and alignment. The 316 stainless steel construction with passivated finish provides outstanding resistance to chemicals, saltwater, and industrial atmospheres, making it ideal for marine equipment, food processing machinery, and pharmaceutical manufacturing. The precisely machined shoulder diameter and controlled length tolerances ensure consistent spacing between components, eliminating the need for additional spacers or washers. The M3 x 0.5mm thread with Class 6g fit and coarse thread spacing enables rapid assembly while maintaining vibration resistance in dynamic applications. The socket head hex drive design allows for high torque application in confined spaces, commonly used in precision instruments, automation systems, and optical equipment where reliable fastening and repeatable alignment are critical.

Specification Summary & Compliance

This metric shoulder screw features M3 thread size with 0.5mm pitch and Class 6g thread fit per ISO standards. The shoulder diameter maintains -0.025 to 0 mm tolerance with shoulder length tolerance of 0 to 0.05 mm for precision applications. Manufactured from 316 stainless steel with passivated finish, it achieves Rockwell B79 hardness and 70,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial use worldwide.