Grease fittings are used to inject a liquid lubricant into various points on mechanical equipment. Grease fittings are available in a variety of sizes and materials.

Grease fittings are commonly used in threshing machines, farm machinery, and tractors. They are also found in riding lawn mowers.

Grease fittings are not expensive. You can buy self-tapping, flush, or straight through grease fittings. You can also buy a specialized fitting like a shut-off grease fitting, or a special relief fitting that prevents too much grease from injected into the system.

Grease fittings can be manufactured in brass, stainless steel, and Monel. They are mainly used to lubricate the moving parts of mechanical equipment. They can be attached to the machine with the help of a grease gun. Some types of grease guns have swivel heads, which enable users to direct grease into the mechanism without the use of a hose.

Grease fittings are made in a variety of sizes, ranging from a tiny one to a large size. Usually, the fitting is matched to the hole it will be fitted into. Some grease fittings are designed with a drive slot to facilitate easy installation.

If you want to know what kind of thread is on your fitting, you can compare the threads with a thread pitch gauge. You can also check the thread series to identify whether the threads are American Standard, Foreign Standard, or Unified National.