S-90269A225 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.
• Precise component alignment and pivot points enabled by the 5mm shoulder diameter with tight tolerance, reducing wear and simplifying assembly.
• High mechanical strength and durability with a tensile strength of 70,000 psi and Rockwell B79 hardness, ensuring reliable performance under load.
• Secure and efficient installation with a 2.5 mm hex socket drive and knurled head texture, providing excellent grip and preventing tool slippage.
• Consistent and reliable thread engagement due to the Class 5g6g metric thread with a 0.7mm coarse pitch, facilitating quick assembly and disassembly.
• Compliance with stringent environmental regulations, being RoHS 3 and REACH compliant, making it suitable for global industrial supply chains.
• Versatile shoulder length of 18mm for spacing components accurately and acting as a sturdy axle or guide in mechanical assemblies.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The 316 stainless steel material offers exceptional resistance to corrosion and oxidation, making it a top choice for applications in chemical processing, marine equipment, and food machinery where moisture and aggressive agents are present. The 5mm shoulder diameter with its precise tolerance ensures a snug fit as a pivot, bearing surface, or locator, minimizing radial play and extending the life of mating parts. Combined with the hex socket drive and knurled head, it allows for high-torque installation without cam-out, which is crucial in automated production lines and tight spaces. The Class 5g6g thread with a coarse pitch ensures rapid and secure fastening, reducing assembly time while maintaining high shear and tensile strength for demanding industrial applications.

Specification Summary & Compliance

This shoulder screw features a metric M4 x 0.7mm coarse thread with a Class 5g6g thread fit, ensuring dimensional accuracy and interchangeability. The shoulder diameter tolerance is -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, providing precise control for engineering fits. Manufactured from 316 stainless steel, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free of restricted substances and suitable for use in regulated industries.