S-94191A300 3/8"-16 Fed. Spec. FF-N-836, MS51967-9 Hex Nuts

Hex Nuts

0871FA00020 Hex Nuts
0871FA00020 Hex Nuts

Image may differ from product. See technical specification for details.

Part No.
Part No. 0871FA00020
Equivalent to mcmaster :
94191A300

Basic Information

System of Measurement Inch
Nut Type Hex
Specifications Met Fed. Spec. FF-N-836, MS51967-9

Dimension Parameters

Width 9/16"
Height 21/64"

Thread Parameters

Thread Type UNC
Thread Size 3/8"-16
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Material & Strength Parameters

Material Cadmium Yellow-Chromate Plated Steel
Fastener Strength Grade/Class Grade 8
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Exceptional strength and reliability with Grade 8 classification, ensuring secure fastening in high-stress industrial applications.
  • Superior corrosion resistance provided by cadmium yellow-chromate plating, extending service life in harsh or outdoor environments.
  • Precise thread engagement with Class 2B thread fit, reducing the risk of cross-threading and ensuring consistent performance.
  • Wide compatibility due to 3/8"-16 UNC coarse threading, making it suitable for various assemblies and easy installation.
  • Compliance with stringent standards including Fed. Spec. FF-N-836 and MS51967-9, guaranteeing quality and interoperability.
  • Durable external hex design allows for easy tightening with standard tools, improving efficiency in maintenance and assembly.
  • Optimized dimensions (9/16" width, 21/64" height) for a balanced profile that supports stable connections without adding unnecessary bulk.

Professional Applications & Engineering Value

This Grade 8 hex nut is engineered to address critical challenges in heavy-duty and corrosive settings, such as construction, machinery, and automotive systems. The cadmium yellow-chromate plated steel construction combats rust and wear, while the 3/8"-16 UNC coarse thread with Class 2B fit ensures reliable thread engagement, minimizing loosening under vibration. Ideal for applications demanding high strength and long-term durability, it reduces maintenance needs and enhances safety in industrial fastening assemblies, supported by compliance with Fed. Spec. FF-N-836 and MS51967-9 standards.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit and adheres to UNC coarse thread standards with a size of 3/8"-16. It meets manufacturing specifications under Fed. Spec. FF-N-836 and MS51967-9, ensuring dimensional accuracy and performance. The product is designed to support industry requirements for reliable, high-strength fasteners in various engineering applications.

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