S-90278A713 M1.6 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Precise component alignment due to the accurately machined shoulder (2.5mm diameter, 4mm length) ensuring stable and secure assembly.
• High-strength performance with a tensile strength of 70,000 psi and Rockwell B55 hardness for demanding mechanical applications.
• Secure and efficient installation using the 1.5mm hex socket drive, providing high torque transfer and a clean, flush finish.
• Reliable thread engagement with a Class 6g fit and coarse M1.6 x 0.35mm thread for quick assembly and vibration resistance.
• Environmental compliance assurance by meeting RoHS 3 and REACH standards, ensuring safety and regulatory adherence.
• Dimensional consistency with tight tolerances on the shoulder, guaranteeing repeatable performance in precision assemblies.

Professional Applications & Engineering Value

This M1.6 shoulder screw is engineered to address critical alignment and durability challenges in compact industrial assemblies. The 18-8 stainless steel material offers excellent resistance to oxidation and corrosion, making it suitable for electronics, medical devices, and precision instruments where environmental factors are a concern. The hex socket head allows for high-torque installation in confined spaces, while the precise shoulder fit ensures accurate positioning of components like gears, pulleys, or PCB mounts, reducing wear and misalignment. With a coarse metric thread (M1.6 x 0.35mm), it facilitates faster assembly and provides robust holding power in high-vibration applications, enhancing overall mechanical integrity and reducing maintenance needs.

Specification Summary & Compliance

This precision shoulder screw adheres to metric system standards with a thread size of M1.6 and pitch of 0.35mm, classified under Class 6g thread fit for consistent engagement. The shoulder diameter is 2.5mm with a tolerance of -0.025 to 0 mm, and shoulder length is 4mm with a tolerance of 0 to 0.05 mm, ensuring high dimensional accuracy. Manufactured from 18-8 stainless steel, it meets industry specifications for hardness (Rockwell B55) and tensile strength (70,000 psi). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial and electronic applications.