What size thread is a Zerk fitting?
1/4″‑28
The most common standard grease zerk size is 1/4″‑28 SAE‑LT and is often used in automotive applications. They can also be found in agricultural environments as well as other various standard duty applications. For heavy-duty applications, larger 1/8″‑27 PTF grease zerk fitting sizes can be found.
What is a button head grease fitting?
Button head grease fittings are a heavier duty fitting distinguished by its flat, low profile appearance. They are able to handle large grease volume due to their high flow rate and sturdy construction. Button head fittings feature a smooth working surface and allow for easier coupler attachment and removal.
What size Tap do I need for a grease zerk?
Grease Fitting Thread Size
| Fitting Thread Size | Tap Drill Selection For Standard Thread Fittings | |
|---|---|---|
| 1/4″-28 | #3 (for soft metal use #5) | Quote |
| 5/16″-32 | 9/32″ (for soft metal use “J”) | Quote |
| 1/8″ Pipe | 11/32″ (for soft metal use “R”) | Quote |
| 1/4″ Pipe | 7/16″ | Quote |
What threads are used on grease Zerks?
SAE‑LT (Society of Automotive Engineers) threads possess SAE pipe thread dimension of 1/4″‑28 taper. Grease zerk fittings in the automotive industry as well as many other industrial machines and standard duty applications use SAE‑LT threads.
What thread is a standard grease fitting?
Grease fittings come in many different styles. There are two grease fittings that are very common. These are the 1/4″-28 thread and the 1/8″ NPT thread.
Why is it called a grease ZERK?
The Zerk design, named after Oscar Zerk, used a fitting much smaller than the Alemite pin-type and did not lock the hose coupler or hand gun and fitting together. Instead, the seal between them was maintained by the pressure of a pushing action when the operator applied the coupler to the fitting.
Are all grease fittings the same size?
Grease fittings come in many different styles. There are two grease fittings that are very common. These are the 1/4″-28 thread and the 1/8″ NPT thread. However, there are other less common grease fitting threads in use.
Are John Deere grease fittings metric?
John Deere Classic 21 Piece Metric Grease Fittings Assortment in 6, 8, and 10 mm thread sizes. 21 assorted metric grease fittings in nine of the most popular styles and sizes are contained in an easy-to-handle, sturdy plastic box with six separately labeled and illustrated compartments.
What is taper thread for grease fitting?
Taper Thread Grease Fittings are used on cars, trucks and many types of industrial machinery. It is recommended that SAE-LT taper threads (Society of Automotive Engineers Lubrication Threads) be installed into straight holes with a 1/4”-28 UNF-3B straight-threaded hole.
Why are grease fittings called Zerks?
What thread is a grease zerk?
SAE Products 1/8″ pipe thread grease fittings are commonly referred to as 1/8″ pipe thread zerk fittings.