S-90269A554 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction, ideal for chemical, marine, and outdoor applications.
• Exceptional mechanical strength with 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance under high-stress conditions.
• Precise alignment and positioning enabled by a smooth, 6mm diameter shoulder with controlled tolerances, reducing component wear and misalignment.
• Consistent and reliable threading with Class 5g6g metric coarse thread (M4 x 0.7mm), ensuring secure fastening and interchangeability.
• Secure and flush installation using a standard 3mm hex drive in a socket head, providing a clean profile and high torque capability.
• Enhanced durability and longevity from a Rockwell B79 hardness rating, resisting deformation and maintaining integrity over repeated use.
• Compliance with global environmental standards, including RoHS 3 and REACH, ensuring safe and sustainable use in 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 offers excellent resistance to corrosion and oxidation, making it suitable for demanding sectors like automation, medical devices, and food processing equipment. The socket head design with a 3mm hex drive allows for easy installation in confined spaces, while the 19mm shoulder length provides a stable bearing surface for rotating parts like gears and pulleys, minimizing friction and wear. With a Class 5g6g thread fit, it ensures tight tolerances and reliable performance in dynamic applications, reducing maintenance downtime and enhancing operational efficiency. This screw is ideal for precision engineering where alignment, strength, and corrosion resistance are paramount.

Specification Summary & Compliance

This shoulder screw adheres to metric standards with an M4 x 0.7mm coarse thread and Class 5g6g thread fit for precise engagement. Shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring accurate assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industrial applications.