S-93856A422 M20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and reducing maintenance costs
• Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under heavy loads
• Precise alignment and pivot functionality from the 24mm shoulder diameter with tight tolerances (-0.072 to -0.01mm), minimizing assembly play
• Easy installation and removal using the 12mm hex socket drive and knurled head, providing secure grip and reducing tool slippage
• Consistent thread engagement with Class 5g6g metric coarse threads (M20 x 2.5mm), offering vibration resistance and quick assembly
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting global environmental and safety requirements
• Durable surface and structure with Rockwell B55 hardness, resisting wear and extending service life in demanding applications

Professional Applications & Engineering Value

This M20 shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial machinery. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for outdoor, chemical, or high-moisture environments. The 24mm shoulder diameter with precise tolerances ensures accurate component positioning, reducing misalignment and wear in rotating assemblies like conveyor systems, motor mounts, and automation equipment. The hex socket head with knurling allows for secure tool engagement, even in confined spaces, while the Class 5g6g coarse thread (M20 x 2.5mm) offers robust holding power and resistance to loosening under vibration. These features collectively enhance assembly reliability, minimize downtime, and support high-stress applications in manufacturing, automotive, and heavy equipment sectors.

Specification Summary & Compliance

This metric shoulder screw adheres to ISO metric thread standards with a Class 5g6g thread fit, ensuring dimensional accuracy and interchangeability. The shoulder diameter tolerance is tightly controlled at -0.072 to -0.01 mm, and the shoulder length tolerance ranges from -0.05 to 0.05 mm for consistent performance. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety standards for global industrial use.