The lubrication nipples are equipped with a tapered (conical) thread. They are suitable for lubrication points that require frequent and reliable lubrication.
The most commonly used grease nipples are available in straight, angled 45° and 90°. In addition to the metric thread, these are also available, for example, with inch, SAE, UNF, UNC, BSF, NPT threads. The places of application can be found, among others, in mechanical engineering, for pillow block and plain bearings and linear guides.