S-94575A520 5/8"-18 MS51968-20; Fed. Spec. FF-N-836 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance from cadmium yellow-chromate plating, ideal for harsh industrial environments
• Superior load-bearing capacity with Grade 5 strength classification, ensuring reliable performance under high stress
• Precise thread engagement with Class 2B fit and UNF fine threads, reducing the risk of loosening and vibration failure
• Compliance with military and federal standards (MS51968-20 and FF-N-836), guaranteeing quality and interchangeability
• Easy installation and removal thanks to the standard external hex drive design and right-hand threading
• Durable steel construction for long service life in demanding applications like machinery and structural assemblies
• Consistent dimensional accuracy with 15/16" width and 35/64" height, ensuring proper fit and alignment

Professional Applications & Engineering Value

This heavy-duty Grade 5 hex nut is engineered to address common industrial challenges such as corrosion, vibration, and high-torque requirements. Made from cadmium yellow-chromate plated steel, it offers excellent protection against rust and wear in outdoor or chemically exposed settings. The 5/8"-18 UNF fine threads and Class 2B thread fit provide a tight, secure connection that minimizes backlash and maintains integrity under dynamic loads. Ideal for use in automotive, aerospace, and construction equipment, this nut ensures reliable fastening in demanding applications where failure is not an option. Its compliance with MS51968-20 and Fed. Spec. FF-N-836 standards further assures engineers of its performance and durability.

Specification Summary & Compliance

This hex nut features a Class 2B thread fit and adheres to UNF fine thread standards with precise dimensions of 15/16" width and 35/64" height. It meets MS51968-20 and Federal Specification FF-N-836, ensuring high-quality manufacturing and material consistency. The product is designed for right-hand threading and external hex drive, providing reliable performance in industrial applications. While specific RoHS or REACH declarations are not provided, the cadmium plating and steel material are commonly used in compliant industrial components.