S-90323A327 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring longevity in harsh environments.
• Precise component alignment thanks to the 5mm shoulder diameter with tight tolerances, minimizing assembly errors.
• High mechanical strength offering 80,000 psi tensile strength and Rockwell B95 hardness for reliable performance under load.
• Efficient installation and removal with a 2.5mm hex socket low-profile head, ideal for space-constrained applications.
• Secure thread engagement with Class 6g fit and coarse 0.7mm pitch, reducing cross-threading risks in industrial settings.
• Environmental and regulatory compliance with RoHS 3 and REACH, making it safe for global industrial supply chains.
• Versatile right-hand metric thread (M4 x 0.7mm) ensuring compatibility with standard metric components.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material, enhanced by a passivated finish, provides excellent resistance to rust and chemical exposure, making it ideal for machinery, automotive, and electronics where environmental factors are a concern. The hex socket head with low profile allows for easy access in tight spaces, while the precise shoulder (5mm diameter, 16mm length) ensures accurate positioning of moving parts like gears and bearings, reducing wear and maintenance costs. Its Class 6g thread fit and coarse pitch facilitate quick assembly without sacrificing holding power, supporting efficient production lines and reducing downtime in industrial applications.

Specification Summary & Compliance

This metric shoulder screw features an M4 x 0.7mm thread with Class 6g tolerance for reliable fit. The shoulder diameter is 5mm with a tolerance of -0.025 to 0 mm, and shoulder length is 16mm with a tolerance of 0 to 0.05 mm, ensuring high precision. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for safe, industrial use without hazardous substances.