S-90278A719 M1.7 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extending service life.
• High mechanical strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable performance under load.
• Precise component alignment and reduced wear due to the accurately machined shoulder with a diameter of 2.5mm and length of 4mm.
• Secure and efficient installation using a standard 1.5mm hex drive, preventing tool slippage and ensuring consistent torque application.
• Reliable thread engagement with a Class 6g metric coarse thread (M1.7x0.35mm), minimizing cross-threading risks in assembly.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.
• Smooth socket head profile for a flush finish and reduced snagging in compact applications.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for electronics, precision instruments, and machinery exposed to moisture or chemicals. The hex drive socket head allows for high-torque installation in confined spaces, while the Class 6g thread with a coarse pitch ensures quick and secure fastening, reducing assembly time. The precisely toleranced shoulder (2.5mm diameter, 4mm length) acts as a pivot or spacer, maintaining exact part positioning and minimizing wear in dynamic systems. This combination of material properties and thread design delivers long-term reliability and reduces maintenance needs in demanding engineering environments.

Specification Summary & Compliance

This M1.7x0.35mm shoulder screw features a Class 6g thread fit per metric standards, ensuring dimensional accuracy and interchangeability. The shoulder diameter is held to a tolerance of -0.025 to 0 mm, and the shoulder length to 0 to 0.05 mm, guaranteeing precise fit for alignment-critical assemblies. Manufactured from 18-8 stainless steel, it meets mechanical properties including a tensile strength of 70,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, adhering to environmental and safety standards for industrial components.