S-90270A666 M4 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 30mm smooth shoulder with tight diameter tolerance for accurate positioning.
• High-strength fastening performance with a tensile strength of 70,000 psi and Rockwell B55 hardness for demanding applications.
• Reliable thread engagement provided by the Class 6g metric coarse thread, ensuring consistent and secure connections.
• Easy installation and removal with the combination of socket and slotted drive, offering versatile tooling options.
• Environmental compliance with RoHS 3 and REACH standards, making it suitable for regulated industries.
• Durable and wear-resistant design, maintaining integrity under repeated use and mechanical stress.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and spacing challenges in precision assemblies. The 30mm shoulder length with minimal tolerance acts as a precise pivot or axle, preventing component misalignment in machinery, robotics, and electronic enclosures. Manufactured from 18-8 stainless steel, it offers excellent resistance to oxidation and corrosion, ensuring long-term reliability in humid or chemically aggressive settings. The Class 6g thread fit and coarse M4x0.7 threading provide robust fastening, reducing the risk of stripping and enabling quick assembly in high-vibration environments. Its socket head with slotted drive accommodates various tools, streamlining maintenance and reducing downtime in automated systems and industrial fastening applications.

Specification Summary & Compliance

This shoulder screw features a Metric M4x0.7 coarse thread with a Class 6g thread fit and right-hand direction. The shoulder diameter is 5 mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 30 mm with a tolerance of 0 to 0.05 mm, ensuring precise dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in products requiring adherence to strict environmental and safety standards.