S-94827A110 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior Vibration Resistance: Flex-Top locking design creates consistent friction to prevent loosening under dynamic loads, ensuring long-term joint integrity.
• Enhanced Corrosion Protection: Cadmium-plated steel construction offers excellent resistance to rust and environmental degradation in harsh industrial settings.
• Easier Installation & Removal: The extra wide hex profile provides a larger wrenching surface, allowing for higher torque application and reducing the risk of tool slippage.
• Reliable Thread Engagement: Class 2B thread fit ensures consistent, free-spinning assembly with standard 1/4"-20 UNC male threads, minimizing cross-threading risks.
• Broad Compatibility: Coarse UNC threads and right-hand direction make it ideal for quick assembly and disassembly in general-purpose machinery and equipment.
• Durable Mechanical Performance: Made from robust steel, this locknut maintains its locking force and structural integrity under repeated stress cycles.
• Standardized Sizing: Manufactured to inch system specifications (1/2" width, 19/64" height) for seamless integration with existing North American equipment and fasteners.

Professional Applications & Engineering Value

This 1/4"-20 UNC locknut is engineered to solve critical challenges in industrial assemblies where vibration-induced loosening is a primary failure mode. The Flex-Top locking mechanism deforms slightly upon torque application, creating a prevailing torque that resists back-off, making it ideal for motors, conveyors, and heavy machinery. The cadmium-plated steel material provides a sacrificial layer that significantly extends service life in corrosive environments, such as outdoor equipment or manufacturing plants with high humidity. Its extra wide hex profile and external hex drive allow mechanics to apply higher installation torque with standard tools, reducing assembly time and improving workplace safety. By combining reliable coarse threading with a robust locking feature, this nut delivers predictable, maintenance-free performance in demanding industrial applications, from automotive to construction equipment.

Specification Summary & Compliance

This locknut adheres to standard inch system dimensions with a thread size of 1/4"-20 UNC and a Class 2B thread fit for consistent, free-running assembly. The manufacturing process follows industry-accepted standards for external hex drive fasteners, ensuring dimensional accuracy and interchangeability. The cadmium plating meets common industry requirements for corrosion resistance and is typically compliant with RoHS and REACH directives for hazardous substance control, making it suitable for use in regulated markets and environmentally conscious operations.