S-94575A230 5/16"-18 MS51967-5; Fed. Spec. FF-N-836 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with cadmium yellow-chromate plating for extended service life in harsh environments
• Exceptional load-bearing capacity from Grade 5 strength classification, ensuring reliable performance under high stress
• Precise thread engagement with Class 2B thread fit for secure fastening and vibration resistance
• Easy installation and removal using standard external hex drive with familiar 1/2" width
• Compliance with military and federal standards (MS51967-5, FF-N-836) for guaranteed quality and interchangeability
• Optimized for coarse threading with 5/16"-18 UNC pattern, reducing cross-threading risks in industrial assemblies
• Durable steel construction with protective plating that maintains integrity in demanding applications

Professional Applications & Engineering Value

This Grade 5 hex nut delivers critical engineering solutions where corrosion resistance and high tensile strength are paramount. The cadmium yellow-chromate plated steel construction provides superior protection against oxidation and chemical exposure, significantly extending fastener lifespan in industrial equipment, machinery, and structural assemblies. The 5/16"-18 UNC coarse thread configuration ensures rapid installation while minimizing thread damage, complemented by the Class 2B thread fit that maintains consistent clamping force under vibration. The external hex drive design accommodates standard tools for efficient maintenance in confined spaces, making these heavy-duty hex nuts ideal for automotive, construction, and manufacturing applications requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit tolerances with 5/16"-18 UNC coarse threading and right-hand thread direction. Manufacturing complies with MS51967-5 and Federal Specification FF-N-836 standards, ensuring dimensional accuracy and performance reliability. The fastener meets industrial requirements for Grade 5 strength classification with dimensions of 1/2" width and 17/64" height, providing consistent quality across production batches for professional applications.