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Castle Nuts

Castle nuts, also known as slotted nuts, are specialized fasteners featuring notches cut into one end. These notches allow the nut to be secured with a cotter pin, providing additional security and preventing the nut from loosening under vibration or rotational forces.

Castle Nuts

Key Features of Castle Nuts:
  • Slotted Design: The notches on one end of the nut accommodate a cotter pin, ensuring the nut remains securely in place.
  • High Security: Ideal for applications where vibration or movement could cause standard nuts to loosen, providing a reliable locking mechanism.
Available Sizes of Castle Nuts:
  • Imperial Sizes: Range from 1-8 to 1 1/4-7, offering a variety of options to fit different bolt diameters and application requirements.
Applications of Castle Nuts:
  • Automotive: Commonly used in vehicle assemblies, particularly in securing wheel bearings and other critical components where safety is paramount.
  • Machinery: Essential for machinery and equipment subject to vibration and rotational forces, ensuring components remain securely fastened.
  • Aerospace and Marine: Used in applications where secure fastening is critical due to exposure to dynamic forces and harsh environments.
Benefits of Castle Nuts:
  • Enhanced Security: The use of a cotter pin with the slotted design provides a fail-safe against loosening, ensuring the nut remains in place under adverse conditions.
  • Durability: Made from high-quality materials to withstand demanding environments and provide long-lasting performance.
  • Versatility: Suitable for a wide range of applications, from automotive and machinery to aerospace and marine industries.
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Why Choose Springs Fastener?

Shipping Details
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Most orders ship within 24 hours. Shipping is available across the United States.
Comprehensive Inventory
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Our extensive catalog includes fasteners in various materials, finishes, sizes, and grades.
Ease of Online Purchasing
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We accept Visa, MasterCard, AMEX, and Discover.
Purchasing Options
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Our fasteners are available in both individual packages and in bulk quantities with tiered bulk pricing.
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