S-90269A227 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh or chemical-exposed environments.
• Precise component alignment enabled by the 5mm shoulder diameter and 22mm shoulder length for accurate positioning in assemblies.
• High mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance under load.
• Secure and efficient installation with a 2.5 mm hex socket drive and knurled head, providing excellent grip and torque transmission.
• Consistent thread engagement ensured by the Class 5g6g thread fit and coarse M4 x 0.7mm metric thread, reducing cross-threading risks.
• Durable and long-lasting due to Rockwell B79 hardness, maintaining integrity through repeated use and assembly cycles.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safety and regulatory acceptance in global markets.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and durability challenges in precision machinery and industrial equipment. The 316 stainless steel material provides exceptional resistance to corrosion and oxidation, making it suitable for applications in marine, chemical processing, and medical devices where moisture and chemicals are present. The hex socket drive and knurled head ensure secure fastening in tight spaces, while the 5mm shoulder diameter and 22mm shoulder length offer stable support for rotating parts, bearings, or linkages, minimizing misalignment and wear. With a coarse thread and Class 5g6g thread fit, it facilitates quick assembly and disassembly, reducing downtime in maintenance-heavy environments like automation systems and precision instruments.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M4 x 0.7mm coarse thread and Class 5g6g thread fit for precise dimensional accuracy. The shoulder diameter tolerance ranges from -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring consistent performance in high-tolerance applications. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally sensitive and regulated industries.