These components are used in combination with a screw that has a pre-drilled radial hole. The nut is attached and a pin is passed through the notches and the hole in the screw, preventing the nut from turning. Several types of pins may also be used for this purpose. These include: A cotter pin, also known as a split pin — a fastener with twin tines, which after insertion are bent apart to prevent removal. An R-clip, also known as a hairpin cotter pin or hitch pin — a sprung metal fastener with one straight leg inserted into the hole and one profiled leg that grips the outside of the nut. Safety or locking-wire — a wire that’s passed through the notches and the hole, then twisted, and anchored to secure the nut. With six notches spaced at 60-degree intervals, the castellated nut can only be locked where a notch corresponds to the hole. After correct torquing, it’s necessary to turn the nut again up to 30 degrees (in either direction) to locate the hole. As fine-tuning the torque is not possible, castellated nuts are better suited to low-torque applications. They’re unsuited to applications that require a specific preload. Castellated nuts are often threaded with Unified inch fine (UNF) or Unified inch coarse series (UNC) with thread diameter — typically from 1/4 to 1-1/2-inch in varying nut widths and heights. A castellated nut has a cylindrical top of a smaller diameter where the notches are, with a higher profile than a typical nut of its size. It’s similar to a slotted nut but the rounded section featured on a castellated nut allows the pin to be secured tighter to the nut than is possible with a slotted nut.Additionally, a castellated nut is a locking device that’s resistant to movement and vibration but that can be readily removed. This makes it a popular choice for securing the position of a bearing onto a spindle. Castellated nuts are commonly used within the automotive, aircraft, and locomotive industries.A castellated nut, also known as a castle nut, has three notches in one end, giving an appearance similar to the crenellated battlements of a castle. Castellated nuts are a positive locking device that’s used to ensure that the nut remains affixed and resists vibration.

Product Name	Hexagon Slotted Nut/ Castle Nut
Available Raw Material	Carbon Steel, Alloy Steel, Stainless Steel...
Sizes	As per Requirement
Lead Time	30 Working Day for A 20' Container
Thread	Metric Thread or Inch Thread
Standard Range	DIN, ISO JIS, ANSI, ASME, ASTM ...
Surface Finish	Black, Color Zinc, Dacromet, HDG, Zinc Nickel Cr3+  etc
Package	Bulk +Canton+Pallet, Small Boxes+Carton+Pallet, or Customer Request
Payment  Terms	T/T,  30% in advance
Application	Construction, Railway, Automotive, Industry, Furniture, Machinery, Chemical Industry