S-90270A658 M4 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 ensured by the 6mm shoulder with tight diameter tolerance (-0.025 to 0 mm), reducing assembly errors.
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding load-bearing applications.
• Secure and reliable fastening provided by the Class 6g thread fit, maintaining consistent clamping force.
• Easy installation and removal with the combination of socket and slotted drive, offering flexibility for various tools.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries.
• Optimized for coarse thread applications with M4x0.7 metric thread, enabling quick assembly and resistance to vibration loosening.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial settings. Made from 18-8 stainless steel, it offers excellent resistance to corrosion and oxidation, making it suitable for machinery, automotive assemblies, and electronic enclosures exposed to moisture or chemicals. The 6mm shoulder length with precise tolerances acts as a reliable pivot or spacer, preventing misalignment in rotating parts and reducing wear. The Class 6g thread fit and coarse M4x0.7 metric thread ensure secure fastening even under vibration, while the socket head design allows for high-torque installation. Ideal for applications requiring high tensile strength and dimensional stability, this screw minimizes maintenance and enhances equipment lifespan.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M4 thread size, 0.7 mm pitch, and Class 6g thread fit for consistent performance. Shoulder dimensions include a diameter tolerance of -0.025 to 0 mm and length tolerance of 0 to 0.05 mm, ensuring precise assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industries.