There are a wide variety of grease fitting sizes and styles available to choose from, but determining the correct size for your needs can be boiled down to just critical 3 dimensions. A basic understanding of the ‘anatomy’ of a grease fitting will turn a grease fitting novice into an expert in no time.
NOTE: The figure below is used for reference and show ¼”-28 Taper Thread Grease Fittings in straight, 45°, and 90° orientation, which represents the most common type, and for all intents and purposes, the foundation of all other grease fitting styles.
