S-91813A180 5/16"-18 MS35649-2312, Fed. Spec. FF-N-836 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with cadmium yellow-chromate plating, extending service life in harsh industrial environments.
• Reliable coarse thread engagement using 5/16"-18 UNC threads for quick assembly and reduced cross-threading risks.
• Precise Class 2B thread fit ensures smooth installation and consistent clamping force for secure fastening.
• Standard external hex design allows for easy tightening with common wrenches, improving installation efficiency.
• Compliance with MS35649-2312 and Fed. Spec. FF-N-836 guarantees consistent quality and interoperability in regulated applications.
• Durable steel construction provides high tensile strength and fatigue resistance under dynamic loads.
• Right-hand thread direction offers compatibility with standard assembly practices, minimizing training and errors.

Professional Applications & Engineering Value

This 5/16"-18 UNC hex nut is engineered to address common industrial challenges such as corrosion-induced failure and assembly inefficiencies. The cadmium yellow-chromate plated steel material offers a robust barrier against moisture, chemicals, and oxidation, making it ideal for outdoor machinery, automotive assemblies, and structural frameworks. Its coarse thread design facilitates rapid installation in high-vibration settings, reducing downtime. By meeting MS35649-2312 and FF-N-836 standards, it ensures reliability in aerospace, defense, and heavy equipment sectors where precision and durability are non-negotiable. The Class 2B thread fit and external hex drive further enhance usability, providing a dependable solution for engineers seeking long-term performance without frequent maintenance.

Specification Summary & Compliance

This hex nut features a 5/16"-18 UNC coarse thread with Class 2B thread fit for precise dimensional accuracy, adhering to MS35649-2312 and Fed. Spec. FF-N-836 manufacturing standards. Dimensions include a width of 9/16" and height of 7/32", ensuring compatibility with standard inch-system components. The product complies with industry regulations for quality and safety, including potential RoHS and REACH directives, supporting use in environmentally conscious and high-performance engineering applications.