S-90263A239 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction and passivated finish
• Precise alignment and smooth rotation for machinery and assemblies ensured by the smooth 5mm diameter shoulder with tight tolerances
• High-strength performance under load with a tensile strength of 70,000 psi and Rockwell B79 hardness
• Reliable, coarse-pitch threading (M4x0.7) with Class 6g fit for quick assembly and secure fastening in industrial applications
• Secure, flush installation and high torque capability using a standard 2.5mm hex drive in the socket head
• Compliance with strict environmental regulations including RoHS 3 and REACH, ensuring safety and sustainability
• Durable, long-lasting performance with excellent chemical and temperature resistance for demanding engineering uses

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, combined with a passivated finish, provides exceptional resistance to chemicals, moisture, and corrosive agents, making it ideal for marine, chemical processing, and food industry equipment. The precise shoulder (5mm diameter, 10mm length) acts as a pivot or spacer, ensuring accurate component positioning and reducing wear. With a Class 6g thread fit and coarse pitch, it offers quick installation and reliable holding power in high-vibration environments, from robotics to automotive systems. This socket head shoulder screw delivers consistent performance where dimensional accuracy and corrosion resistance are paramount.

Specification Summary & Compliance

This shoulder screw features an M4x0.7 coarse thread with Class 6g thread fit per metric standards, ensuring precise engagement. The shoulder maintains tight tolerances: diameter of 5 mm (-0.025 to 0 mm) and length of 10 mm (0 to 0.05 mm) for accurate fits. Manufactured from 316 stainless steel with a passivated finish, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe industrial use.