S-94191A150 1/4"-28 Fed. Spec. FF-N-836, MS51968-3 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with cadmium yellow-chromate plating, ideal for harsh industrial environments
• Exceptional strength and reliability from Grade 8 steel, ensuring secure fastening under high-stress conditions
• Precise Class 2B thread fit for smooth assembly and reduced risk of cross-threading
• Fine UNF threads (1/4"-28) providing better vibration resistance and improved load distribution
• External hex drive design for easy installation with standard tools and consistent torque application
• Compliance with Fed. Spec. FF-N-836 and MS51968-3 guarantees consistent quality and interchangeability
• Right-hand threading for standard installation procedures and compatibility with common components

Professional Applications & Engineering Value

This Grade 8 heavy-duty hex nut is engineered to address critical challenges in industrial and mechanical assemblies where vibration resistance and corrosion protection are paramount. The cadmium yellow-chromate plated steel construction provides a durable barrier against moisture, chemicals, and environmental exposure, significantly extending service life in outdoor equipment, automotive, and machinery applications. The 1/4"-28 UNF fine threads offer superior clamping force retention compared to coarse threads, making these external hex nuts ideal for high-vibration environments like engine components, hydraulic systems, and structural frameworks. With its Class 2B thread fit, installation is smooth and reliable, reducing assembly time and preventing thread damage during repeated maintenance cycles.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit per UNF standards with 1/4"-28 fine threads and right-hand direction. Dimensions include 7/16" width and 7/32" height with standard hex profile. Manufactured to meet Fed. Spec. FF-N-836 and MS51968-3 specifications, ensuring consistent quality and performance. The Grade 8 strength classification confirms high tensile capability for demanding applications. The cadmium yellow-chromate plating provides corrosion resistance while maintaining compliance with industrial fastener standards.