Castle nuts
Castle Nuts, also known as slotted nuts, are precision-engineered fasteners designed for locking applications. Featuring slots cut into one end, they are used in conjunction with a cotter pin and a drilled bolt or axle to prevent rotation and loosening under vibration or dynamic loads.
Named for their resemblance to the battlements of a castle, these nuts offer a reliable mechanical locking system and are widely used where safety and secure fastening are critical.
Secure Fit. Lock Tight. Perform Strong.
Extra long nuts, also known as coupling nuts or extended hex nuts, are commonly used in mechanical, structural, and heavy engineering applications. Their primary function is to connect two male threaded rods or to provide deep thread engagement where high clamping strength is essential. These nuts are particularly useful in:
Steel fabrication
Heavy machinery assembly
Bridges and structural supports
Wind turbine installations
Automotive and aerospace components
Pipeline and oil & gas equipment
Due to their extended length, they offer greater thread engagement compared to standard nuts, minimizing the risk of loosening due to vibration or load stresses.
Extended Thread Depth: Offers superior load distribution and grip over longer threaded sections.
High Tensile Strength: Manufactured from carbon steel, alloy steel, or stainless steel, depending on the requirement, for superior performance under high-stress environments.
Precision Machining: Each nut is precisely machined using CNC technology to ensure tight tolerances and perfect thread alignment.
Corrosion Resistance: Available with coatings like black oxide, hot-dip galvanizing, or zinc plating to resist corrosion and environmental wear.
Customizable Dimensions: We can manufacture extra long nuts in various sizes, diameters, and thread standards (metric, UNC, UNF, etc.) as per client specifications.
Enhanced Holding Power: The extended length allows for a larger surface area contact, reducing stress and the likelihood of failure.
Durability in Harsh Conditions: Ideal for outdoor or high-vibration settings where standard nuts may fail.
Versatility: Suitable for both temporary and permanent joints across diverse industries.
At our company, we don’t just supply hardware — we engineer reliable fastening solutions tailored to your project needs. Whether you’re building infrastructure or assembling precision machinery, our extra long nuts are the dependable choice for strength and longevity.
Let us know your custom requirements, and we’ll deliver precision-engineered nuts made to exceed expectations.
Applications
- Automotive & Motorsport
- Railways & Locomotive Parts
- Aerospace Equipment
- Agricultural Machinery
- Heavy Machinery & Construction Equipment
- Marine & Offshore
