S-90269A523 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure.
• Enhanced durability and wear resistance from the black oxide finish, providing a protective layer against abrasion.
• Precise component alignment ensured by the 5mm shoulder with tight length tolerance (±0.25mm), reducing assembly errors.
• High mechanical strength offering 70,000 PSI tensile and 35,000 PSI shear strength for reliable performance under heavy loads.
• Secure and non-slip fastening enabled by the knurled head and hex socket drive, allowing for high-torque installation.
• Consistent and reliable thread engagement with Class 5g6g thread fit, ensuring compatibility and reducing cross-threading risks.
• Compliance with global environmental standards including RoHS 3 and REACH, making it suitable for regulated 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 provides exceptional resistance to corrosion and pitting, making it ideal for marine, chemical processing, and food industry applications where moisture and corrosive agents are prevalent. The black oxide finish not only enhances aesthetic appeal but also adds a layer of protection against wear and galling. The 5mm shoulder with controlled tolerances allows for exact positioning of components such as gears, pulleys, and bearings, minimizing misalignment and vibration. Combined with the coarse thread spacing and Class 5g6g thread fit, it ensures quick, secure fastening in high-vibration environments, reducing maintenance downtime and improving overall system reliability.

Specification Summary & Compliance

This shoulder screw features a metric M4 x 0.7mm thread with Class 5g6g thread fit for precise dimensional accuracy. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its suitability for environmentally conscious and industrial applications requiring adherence to strict safety and material standards.