S-90278A373 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
• Precise component alignment enabled by the 5mm shoulder diameter with tight tolerance (-0.025 to 0mm) for accurate assembly positioning
• High-strength reliability with 70,000 psi tensile strength and Rockwell B55 hardness to withstand demanding mechanical loads
• Secure hex drive engagement through 2.5mm socket head design preventing cam-out and ensuring consistent torque application
• Optimized thread performance with Class 6g fit and M4 x 0.7mm coarse pitch for quick assembly and vibration resistance
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Versatile shoulder length of 16mm with controlled tolerance (0 to 0.05mm) providing stable bearing surfaces for rotating components

Professional Applications & Engineering Value

This precision shoulder screw delivers exceptional engineering value in applications requiring exact component positioning and rotational stability. The 18-8 stainless steel construction provides excellent corrosion resistance while maintaining high tensile strength for demanding mechanical assemblies. The M4 x 0.7mm coarse thread with Class 6g fit ensures reliable fastening in vibrating environments, while the precisely machined shoulder with controlled diameter tolerance enables accurate alignment of bearings, gears, and other rotating components. The hex socket head design allows for compact installation in space-constrained applications, making these metric shoulder screws ideal for precision machinery, automation systems, and industrial equipment where dimensional accuracy and long-term reliability are critical.

Specification Summary & Compliance

This M4 shoulder screw features Class 6g thread fit per metric standards with precise shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm. Manufactured from 18-8 stainless steel with Rockwell B55 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 adherence for industrial applications worldwide.