S-94191A750 9/16"-18 Fed. Spec. FF-N-836, MS51968-18 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional tensile strength with Grade 8 classification, ensuring reliable performance in high-stress industrial environments
• Superior corrosion resistance from cadmium yellow-chromate plating, extending service life in harsh or outdoor conditions
• Precise fine threading (9/16"-18 UNF) with Class 2B fit for secure, vibration-resistant connections and reduced risk of loosening
• Standard external hex drive design for easy installation and removal using common tools, improving assembly efficiency
• Compliance with Fed. Spec. FF-N-836 and MS51968-18 guarantees consistent quality and interchangeability in regulated applications
• Right-hand threading for straightforward installation following conventional fastening practices
• Durable steel construction provides excellent load distribution and long-term reliability in heavy-duty assemblies

Professional Applications & Engineering Value

This Grade 8 hex nut is engineered to address critical challenges in demanding industrial settings where fastener failure is not an option. The cadmium yellow-chromate plated steel construction delivers robust corrosion protection, making it ideal for machinery, structural frameworks, and equipment exposed to moisture or chemicals. Its UNF fine threading (9/16"-18) and Class 2B thread fit ensure tight, secure fastening that resists vibration-induced loosening—common in automotive, aerospace, and heavy equipment applications. By meeting Fed. Spec. FF-N-836 and MS51968-18, it provides assurance of dimensional accuracy and performance consistency, reducing downtime and maintenance costs in high-strength fastener systems.

Specification Summary & Compliance

This hex nut features a 9/16"-18 UNF fine thread with Class 2B thread fit for precise engagement, and complies with Fed. Spec. FF-N-836 and MS51968-18 manufacturing standards. Dimensions include a 7/8" width and 31/64" height, with right-hand thread direction and external hex drive. The Grade 8 strength classification confirms high tensile capability, while the cadmium yellow-chromate plating offers environmental durability. Suitable for use in systems requiring adherence to industrial and military specifications.