S-96654A119 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking: Integrated nylon patch ensures secure fastening, preventing loosening under dynamic loads from -70° to 250°F.
• Exceptional corrosion resistance: Made from 18-8 stainless steel with a passivated finish for long-lasting performance in harsh environments.
• High-strength durability: With a 70,000 psi tensile strength and Rockwell B55 hardness, it withstands heavy-duty mechanical stress.
• Precision alignment and spacing: The 20mm shoulder with precise fit provides accurate component positioning and acts as a built-in pivot or bearing surface.
• Reliable thread engagement: Class 6g thread fit and coarse M3x0.5mm pitch ensure easy assembly and consistent, secure connections.
• Easy installation in confined spaces: The hex socket head with 2mm drive allows for efficient tightening with standard tools, even in limited access areas.
• Compliance and safety assurance: Meets RoHS 3 and REACH regulations, ensuring environmental and workplace safety standards are upheld.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical assembly challenges in demanding industrial settings. The 18-8 stainless steel construction and passivated finish provide superior resistance to rust and chemical exposure, making it ideal for machinery, automotive, and electronics applications where environmental factors are a concern. The nylon patch locking feature effectively counters vibration-induced loosening, a common failure point in moving assemblies, ensuring operational integrity from -70° to 250°F. Its 20mm shoulder length with a precise fit is crucial for maintaining exact part alignment, serving as an axle or dowel, which reduces wear and simplifies assembly in precision instruments and automated equipment. By combining a hex socket head for easy installation with high tensile strength, this fastener delivers reliable performance that minimizes maintenance and downtime.

Specification Summary & Compliance

This shoulder screw features a Class 6g thread fit per metric standards, ensuring dimensional accuracy for the M3x0.5mm coarse threads. The shoulder diameter is held to a tight tolerance of -0.025 to 0 mm, and the shoulder length tolerance is 0 to 0.05 mm, guaranteeing a precise fit for alignment-critical applications. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it adheres to strict environmental and safety regulations, providing assurance for use in regulated industries.