S-90269A563 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced durability and strength offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable, long-lasting fastening under stress.
• Precise alignment and spacing enabled by the 6mm shoulder diameter, reducing wear and simplifying assembly in machinery and fixtures.
• Secure, tamper-resistant installation with a hex socket head and 3mm drive, allowing for high torque application in confined spaces.
• Consistent performance and fit due to Class 5g6g thread fit and coarse pitch (0.7mm), ensuring easy engagement and vibration resistance.
• Improved aesthetics and minimal light reflection with a black oxide finish, while adding a layer of corrosion protection.
• Compliance with global environmental standards including RoHS 3 and REACH, making it safe for regulated industries and international supply chains.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 316 stainless steel material provides excellent resistance to chemicals, saltwater, and extreme temperatures, preventing failure in demanding conditions like marine equipment, chemical processing plants, and food machinery. The integrated 6mm shoulder diameter acts as a precise pivot or bearing surface, eliminating the need for additional spacers and reducing assembly time. Combined with the coarse metric thread and hex socket drive, it ensures quick, secure fastening in high-vibration environments such as robotics, automotive jigs, and conveyor systems. The black oxide finish not only enhances corrosion resistance but also minimizes glare, making it suitable for optical and electronic enclosures where reflection control is essential.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit per metric standards, ensuring precise tolerance for reliable engagement. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, guaranteeing consistent alignment in assemblies. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, affirming its suitability for environmentally conscious industrial applications without hazardous substances.