JB Industries is a leading manufacturer and supplier of precision machine components, assemblies, and fasteners. Known for high-quality engineering and reliable performance, the company serves a wide range of industries with customized solutions and timely delivery.


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Castle Nut

A Castle Nut (also known as a castellated nut) is a hexagonal nut with notched slots (resembling the battlements of a castle) cut into one end. Designed for use with a cotter pin or safety wire through a drilled bolt or axle, it provides a secure locking mechanism that prevents loosening due to vibration or dynamic loads. Castle nuts are commonly used in automotive, aerospace, agricultural, and mechanical assemblies where safety and reliability are critical.

✅ Key Features

  • Shape : Hexagonal with vertical slots (castle-style) for mechanical locking
  • Thread Type : Coarse (UNC), Fine (UNF), Metric (ISO), or Imperial.
  • Sizes Available : M6 to M36 (Metric) / 1/4” to 2” (Imperial)
  • Grades : 6, 8, 10 (ISO) | Grade 5, 8 (SAE)
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