S-90269A217 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh or chemical-exposed environments.
• Precise component alignment and smooth rotation due to the 50mm shoulder length with tight tolerances, reducing wear on mating parts.
• High mechanical strength and durability from a Rockwell B79 hardness and 70,000 psi tensile strength, ensuring reliable performance under load.
• Secure and efficient installation with a 2mm hex socket drive and knurled head, providing excellent grip and preventing tool slippage.
• Consistent and reliable thread engagement from the M3 x 0.5mm coarse pitch Class 5g6g thread, facilitating quick assembly.
• Compliance with stringent environmental regulations, being RoHS 3 and REACH compliant for safe use in regulated industries.
• Versatile industrial application with a standard shoulder fit and right-hand metric thread, compatible with a wide range of machinery and assemblies.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address common challenges in precision assembly, such as misalignment and component wear. The 316 Stainless Steel material offers exceptional resistance to corrosion and oxidation, making it suitable for demanding environments like marine, chemical processing, and food machinery. The 50mm shoulder length provides a precise bearing surface, allowing for accurate positioning of gears, pulleys, or linkages while minimizing friction and fretting. Combined with the Class 5g6g thread fit and coarse pitch, it ensures rapid, secure fastening in high-vibration applications. The hex socket drive and knurled head texture enhance installation torque transfer, reducing the risk of stripping and improving maintenance efficiency in automated systems.

Specification Summary & Compliance

The screw features a Metric M3 x 0.5mm coarse pitch thread with a Class 5g6g thread fit for standard tolerance. The shoulder diameter is 4 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 50 mm with a tolerance of 0 to 0.25 mm, ensuring high dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances and safe for industrial use.