S-90269A519 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and chemical exposure
• Enhanced durability and wear resistance from the Black Oxide finish, providing long-lasting performance and reduced maintenance
• Precise alignment and secure positioning thanks to the 4mm shoulder diameter with tight tolerance, minimizing component movement
• High-strength fastening with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliable load-bearing in demanding applications
• Easy installation and removal using the hex socket drive and knurled head, improving assembly efficiency and reducing tool slippage
• Accurate thread engagement with Class 5g6g metric thread fit, reducing the risk of cross-threading and ensuring consistent performance
• Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive industries

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical challenges in precision assembly and machinery. The 316 Stainless Steel material offers exceptional resistance to corrosion and oxidation, making it ideal for applications in marine, chemical processing, and food equipment where moisture and chemicals are prevalent. The Black Oxide finish not only enhances aesthetics but also adds a protective layer that reduces friction and wear during repeated use. With a 5mm shoulder length and 4mm shoulder diameter, it provides a stable pivot or spacer in rotating components, preventing misalignment and reducing stress on threaded sections. The hex socket head and knurled texture ensure secure tool engagement, speeding up installation in tight spaces common in automation systems and electronic enclosures. By combining high tensile strength and precise Class 5g6g thread standards, this fastener minimizes failure risks in high-vibration environments, delivering long-term reliability for OEMs and maintenance teams.

Specification Summary & Compliance

This shoulder screw features a metric M4 x 0.7mm coarse thread with Class 5g6g tolerance for precise fit and consistent performance. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring accurate dimensional control. Manufactured from 316 Stainless Steel with a Rockwell B79 hardness, it meets industry standards for mechanical durability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and usage in various industrial sectors.