What is Castle Nut?
A castle nut, also known as a slotted nut or a castellated nut, is a type of fastening nut that is commonly used in mechanical applications, especially in the automotive and aviation industries. One of the unique characteristics of a castle nut is that it has slots or notches around the perimeter of the nut. The name is derived from its shape, which resembles an ancient fortification tower ("castle").
Castle nuts come in a variety of sizes, materials, and finishes, depending on the specific application. They are typically made of steel or stainless steel, which makes them strong and durable. Additionally, they can be coated with zinc, nickel, or chromium to improve their corrosion resistance.
Using castle nuts is that they offer a simple, cost-effective solution for fastening applications that require a secure, yet removable, connection. The use of a cotter pin ensures that the nut will not come loose, even during high-stress situations, such as heavy vibrations or extreme temperatures.
DIN935-1-1987 slotted nut Dimensions


Our DIN935 slotted nut is available in a range of sizes and materials to accommodate different requirements.We warmly welcome you to inquiry and buy from our factory. Free samples are available .
About us
Haiyan Gete Hardware Co.,Ltd
Haiyan Gete Hardware Co.,Ltd is a top-rated manufacturer and supplier of fastener products. Our product line ranges including standard fasteners (such as bolts, nuts,screws,studs and anchors) and non-standard parts which customize according to the drawings from the customers .If you're in need of top-quality fasteners, Contact us today to learn more about our products and services.

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