S-96654A131 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant fastening with a nylon patch thread locker that maintains secure hold from -70° to 250°F, reducing maintenance in dynamic environments.
• Exceptional corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh or washdown applications.
• Precise alignment and smooth rotation enabled by the 16mm shoulder with controlled diameter and length tolerances, minimizing part wear.
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness, ensuring durability under load.
• Reliable thread engagement with Class 6g thread fit and M4x0.7mm coarse thread, providing consistent installation and removal.
• Easy installation in confined spaces using the 2.5mm hex socket drive, allowing for high torque application without slippage.
• Compliance with environmental and safety standards including RoHS 3 and REACH, ensuring suitability for regulated industries.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address common challenges in precision assemblies, such as misalignment and vibrational loosening. The 16mm shoulder length with precise diameter control acts as a pivot or spacer, ensuring accurate component positioning in machinery, automotive, and electronic enclosures. Made from 18-8 stainless steel with a passivated finish, it resists corrosion in humid or chemical exposures, extending service life. The integrated nylon patch thread locking feature secures the metric thread against shocks and temperature fluctuations from -70° to 250°F, reducing the need for lock washers or adhesives. Ideal for industrial applications requiring reliable, reusable fasteners, this screw combines strength with compliance to streamline maintenance and improve assembly integrity.

Specification Summary & Compliance

The screw features a Class 6g thread fit per metric standards, with shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm for high precision. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances. Manufactured to consistent specifications, it supports applications demanding reliable performance and environmental responsibility.