S-90269A492 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance in harsh environments due to 316 stainless steel construction and protective black oxide finish.
• Precise component alignment and spacing ensured by the 20mm shoulder with a standard fit and tight diameter tolerance.
• High-strength performance with a tensile strength of 70,000 psi and a minimum shear strength of 35,000 psi for reliable load-bearing applications.
• Secure, tamper-resistant fastening provided by the hex socket drive, requiring only a 2mm hex key for installation.
• Accurate and consistent threading with a Class 5g6g thread fit, ensuring reliable engagement and vibration resistance.
• Improved grip and handling from the knurled head texture, facilitating manual adjustments during assembly.
• Compliance with global environmental standards, being RoHS 3 and REACH compliant for use in regulated industries.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to solve critical challenges in precision assembly. The 316 stainless steel material offers superior resistance to chemicals and saltwater corrosion, making it ideal for marine, chemical processing, and food-grade equipment. The black oxide finish adds an extra layer of protection while reducing light reflection. The defining 20mm shoulder acts as a precise pivot, bearing surface, or spacer, eliminating the need for additional components and reducing assembly time in machinery, robotics, and electronic enclosures. The hex socket drive allows for high-torque installation in confined spaces, and the coarse M3x0.5 metric thread ensures rapid assembly and high vibration resistance, providing long-term reliability and reducing maintenance cycles.

Specification Summary & Compliance

This precision shoulder screw features a Class 5g6g thread fit per metric standards, ensuring excellent dimensional accuracy. The shoulder diameter is manufactured to a tight tolerance of -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm. The screw is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in products sold in the EU and other regulated markets.