S-93856A112 M2 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life
• Precise alignment and smooth rotation ensured by the precision-ground shoulder with tight diameter tolerance for reduced component wear
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing in demanding applications
• Secure, non-slip installation provided by the knurled head texture and 2 mm hex socket drive for improved torque transmission
• Consistent thread engagement with Class 5g6g metric coarse thread (M2 x 0.4mm) for reliable fastening and vibration resistance
• Versatile shoulder length options from 4mm to 49.75mm to accommodate various assembly spacing requirements
• Environmental and regulatory compliance with RoHS 3 and REACH standards for safe use in global markets

Professional Applications & Engineering Value

This M2 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for electronics, medical devices, and automation equipment exposed to moisture or chemicals. The integrated shoulder acts as a precise locating dowel, preventing lateral movement and reducing stress on threaded sections, while the Class 5g6g thread fit ensures consistent clamping force. The knurled head and hex socket drive allow for secure handling and efficient installation in confined spaces, minimizing the risk of stripping. Ideal for securing gears, pulleys, and linkages, this metric shoulder screw delivers reliable performance in high-vibration and high-precision environments.

Specification Summary & Compliance

This precision shoulder screw features an M2 x 0.4 mm coarse metric thread with Class 5g6g tolerance for consistent fit. The shoulder diameter is manufactured to a tight tolerance of -0.072 to -0.01 mm, and shoulder length tolerance is ±0.05 mm, ensuring precise alignment. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for restricted substance-controlled applications.