S-90278A721 M1.7 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life
• Precise component alignment ensured by the accurately machined shoulder with tight diameter and length tolerances
• High-strength performance with a tensile strength of 70,000 psi and Rockwell B55 hardness for reliable, durable fastening
• Secure hex drive engagement provided by the 1.5mm socket head, minimizing stripping and allowing for high-torque installation
• Consistent and reliable thread fit with the Class 6g metric thread, ensuring compatibility and ease of assembly in precision applications
• Compliance with environmental regulations, being RoHS 3 and REACH compliant for use in regulated industries
• Optimized for compact assemblies with its M1.7x0.35mm coarse thread and 3mm thread length, saving space without sacrificing strength

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical challenges in industrial applications where alignment, space constraints, and corrosion are concerns. The 18-8 stainless steel material offers excellent resistance to rust and oxidation, making it suitable for electronics, medical devices, and machinery exposed to moisture. The precise shoulder with a diameter of 2.5mm and length of 6mm acts as a reliable pivot or spacer, reducing assembly errors and wear in moving parts. Combined with the Class 6g thread fit and coarse 0.35mm pitch, it ensures quick, secure fastening in metric systems, minimizing the risk of cross-threading and improving production efficiency in automated or manual assembly lines.

Specification Summary & Compliance

This M1.7x0.35mm shoulder screw features a 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 for consistent performance. Manufactured from 18-8 stainless steel, it meets industry requirements 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, ensuring it is free of hazardous substances and suitable for global industrial and electronic applications.