S-90323A446 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 component alignment enabled by the 4mm shoulder diameter with tight tolerance for accurate positioning
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B95 hardness for reliable performance under load
• Secure installation and removal with hex socket drive and low-profile head design for space-constrained applications
• Consistent thread engagement through Class 6g thread fit and M3x0.5mm coarse pitch for quick assembly
• Regulatory compliance assurance with RoHS 3 and REACH compliance for global industrial applications
• Optimized dimensional stability with ±0.05mm shoulder length tolerance ensuring repeatable precision in automated assembly

Professional Applications & Engineering Value

This precision shoulder screw delivers critical engineering value in applications requiring exact component positioning and reliable fastening. The 18-8 stainless steel construction with passivated finish provides excellent corrosion resistance, making it suitable for manufacturing equipment, automation systems, and electronic enclosures exposed to moisture or chemicals. The precisely machined 4mm shoulder diameter with tight tolerances ensures accurate alignment of moving parts in machinery, while the 45mm shoulder length maintains consistent spacing in assemblies. The M3 x 0.5mm coarse thread with Class 6g fit enables quick installation and secure fastening in high-volume production environments. The low-profile socket head with hex drive allows for efficient tool access in confined spaces, reducing assembly time and improving maintenance accessibility in industrial equipment and precision instruments.

Specification Summary & Compliance

This metric shoulder screw features M3x0.5mm coarse threads with Class 6g thread fit tolerance, ensuring precise thread engagement. The shoulder diameter maintains -0.025 to 0 mm tolerance while the shoulder length is controlled within 0 to 0.05 mm tolerance for dimensional accuracy. Manufactured from 18-8 stainless steel with passivated surface treatment, the fastener meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations, making it suitable for industrial applications requiring environmental and safety compliance standards.