S-93856A171 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and washdown applications.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress conditions.
• Precise thread engagement with Class 5g6g thread fit ensures consistent, vibration-resistant assemblies and reduces the risk of cross-threading.
• Secure, low-profile fastening via the 2.5 mm hex socket drive and knurled head, providing excellent grip and preventing tool slippage during installation.
• Accurate alignment and pivot functions enabled by the precision-ground shoulder with tight diameter tolerance, minimizing part wobble and wear.
• Broad application versatility with a customizable shoulder length from 4 mm to 49.75 mm, accommodating various assembly thicknesses and design requirements.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe use in regulated markets and sensitive applications.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, making it suitable for industrial machinery, automotive components, and electronic enclosures. The hex socket drive and knurled head design ensure secure torque application, reducing the risk of stripping and enabling efficient maintenance in confined spaces. With its Class 5g6g thread fit and coarse pitch thread, the screw offers reliable fastening in dynamic environments where vibration resistance is paramount. The precisely machined shoulder acts as a pivot or locating dowel, eliminating the need for additional bushings and simplifying assembly processes while enhancing component lifespan.

Specification Summary & Compliance

This metric shoulder screw adheres to ISO metric thread standards with an M3 x 0.5 mm coarse thread and Class 5g6g thread fit for precise dimensional accuracy. The shoulder diameter tolerance is maintained between -0.072 mm and -0.01 mm, with a shoulder length tolerance of ±0.05 mm, ensuring consistent performance in high-precision applications. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets stringent environmental and safety requirements for industrial and commercial use.