S-96654A166 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with nylon patch thread locker that maintains secure fastening in high-stress environments
• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish for extended service life
• Precise alignment and positioning with controlled shoulder diameter tolerance (-0.025 to 0 mm) for accurate component mounting
• High mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Wide temperature compatibility with thread locker performing reliably from -70° to 250°F
• Secure hex drive engagement with 5mm socket head for reliable torque transmission and installation
• Industry compliance assurance meeting RoHS 3 and REACH regulations for global manufacturing requirements

Professional Applications & Engineering Value

This M8 shoulder screw with nylon patch thread locker solves critical vibration-induced loosening problems in industrial machinery, automation systems, and precision equipment. The 18-8 stainless steel construction combined with passivated finish provides exceptional corrosion resistance for harsh environments, while the precisely controlled shoulder diameter and Class 6g thread fit ensure accurate component alignment and reduced assembly stress. The permanent locking patch technology eliminates the need for additional locking hardware, streamlining assembly processes in industrial applications where maintenance access is limited. With its metric thread specification (M8x1.25mm) and 25mm shoulder length, this fastener delivers reliable performance in rotating assemblies, pivoting mechanisms, and precision guiding systems.

Specification Summary & Compliance

This precision shoulder screw features M8x1.25mm coarse threads with Class 6g thread fit tolerance, ensuring proper engagement in metric applications. The shoulder diameter maintains tight tolerance of -0.025 to 0 mm with shoulder length tolerance of 0 to 0.05 mm for precise component positioning. Manufactured from 18-8 stainless steel with Rockwell B55 hardness and 70,000 psi tensile strength, this fastener complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring certified components.