S-93856A121 M1.6 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• High-strength performance with a tensile strength of 70,000 psi and Rockwell B55 hardness for reliable load-bearing in demanding applications.
• Precise assembly and secure fit ensured by the Class 5g6g thread fit, reducing the risk of cross-threading and component misalignment.
• Easy installation and removal with the 2 mm hex socket drive and knurled head texture, providing superior grip and torque application.
• Versatile shoulder design with a standard fit and selectable lengths from 50-99.75 mm, offering precise location and pivot points for mechanical assemblies.
• Robust shear resistance with a minimum shear strength of 35,000 psi, enhancing joint integrity under lateral forces.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.

Professional Applications & Engineering Value

This M1.6 shoulder screw is engineered to address critical challenges in precision machinery, electronics, and automation systems. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, making it suitable for environments exposed to moisture or chemicals. The coarse 0.35 mm pitch and Class 5g6g thread ensure quick assembly and a secure fit, reducing installation time and preventing loosening under vibration. The hex socket drive and knurled head allow for high-torque application without slippage, which is essential in compact spaces where access is limited. Its precision shoulder acts as a reliable datum for rotating parts like gears and pulleys, minimizing wear and maintaining alignment in high-cycle applications. This combination of features delivers long-term reliability, reduced maintenance, and enhanced performance in industrial assemblies.

Specification Summary & Compliance

This metric shoulder screw adheres to precise dimensional tolerances, including a shoulder diameter tolerance of -0.072 to -0.01 mm and length tolerance of -0.05 to 0.05 mm, ensuring consistent fit and function. The thread follows standard Metric coarse specifications with a right-hand direction and Class 5g6g fit for reliable engagement. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in products requiring environmental and safety standards.