S-90323A338 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish for long-lasting performance in harsh industrial environments.
• Precise component alignment ensured by a 20mm shoulder with tight length tolerance (0 to 0.05 mm) for stable assembly and reduced wear.
• High mechanical strength with Rockwell B95 hardness and 80,000 psi tensile strength to withstand heavy loads and vibrations.
• Secure, low-profile fastening using a socket head and 3 mm hex drive, ideal for space-constrained applications.
• Reliable thread engagement with Class 6g fit and M5x0.8 coarse thread for quick installation and consistent holding power.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in global markets.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical alignment and durability challenges in industrial settings. The 18-8 stainless steel construction, combined with a passivated finish, provides excellent resistance to corrosion and oxidation, making it suitable for machinery, automotive, and electronics assemblies exposed to moisture or chemicals. The precise shoulder (20mm length with minimal tolerance) acts as a pivot or spacer, ensuring accurate positioning of components like gears, bearings, and linkages, which reduces misalignment and extends equipment life. Its low-profile socket head allows for easy installation in tight spaces, while the metric coarse thread (M5x0.8) ensures rapid assembly and high clamp load retention. Ideal for applications requiring repeatable accuracy, this screw minimizes maintenance and enhances operational reliability in industrial fastening systems.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with a thread size of M5 and pitch of 0.8 mm, classified under Class 6g thread fit for consistent tolerance. The shoulder diameter is 6 mm with a tolerance of -0.025 to 0 mm, and shoulder length is 20 mm with a tolerance of 0 to 0.05 mm, ensuring precise manufacturing. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and suitable for environmentally conscious applications.