What size thread are grease fittings? 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.

What is the standard grease fitting size? What is the most common standard size grease fitting? The most common standard grease fitting 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.

What thread size is a grease ZERK? What size are Zerk fittings? 1/4″-28 Taper Thread Grease Fittings. 1/4″-28 Straight Thread Grease Fittings. 1/8 PTF Grease Fittings.

Are grease fittings metric? Metric Grease Fittings are available in both regular and stainless steel. Metric Grease Fittings are also referred to as Metric Zerk Fittings, Metric Lubrication Fittings, Metric Hydraulic Fittings, and Metric Zerks.

What size thread are grease fittings? – Related Questions

Are there different types of grease fittings?

There are three major thread types for grease fittings: metric, taper or parallel, and unified. M5, M6, M7, M8, and M10 are common metric threads. British standard pipe (BSP), pipe thread fine (PTF), and national pipe thread fine (NPTF) fittings use tapered or parallel threads.

Are John Deere grease fittings metric?

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. John Deere grease fittings are manufactured to the most stringent quality standards and are heat-treated to SAE specifications.

How do you size a grease fitting?

Measurement #2 – Thread Pitch

The best way to determine thread pitch of a grease fitting is to compare the threads to something with a known thread. A thread pitch gauge is the ideal tool for this but you can also compare the grease fitting threads to a known bolt thread, pipe thread, or another grease fitting.

What is a drive type grease fitting?

Drive Type Grease Fittings are designed for fast production line installation in untapped holes to avoid thread tapping costs. Drive Type Grease Fittings have a serrated shank, which facilitates the substitution of damaged grease fittings in old or oversize holes.

Is Grease Zerks pipe threaded?

SAE Products 1/8″ pipe thread grease fittings are commonly referred to as 1/8″ pipe thread zerk fittings.

Are Zerk fittings universal?

Zerk Fittings may be all the same But I have Had Many that would either NOT Go On or had a Heck of a Time Getting it Off.

What is PTF thread?

Pipe Threads (PTF) are larger in diameter than most UNF or SAE-LT threads and also provide additional strength. PTF threads have a taper like SAE-LT threads to provide a leakproof installation. These threads are designated by nominal pipe diameter.

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.

Why is it called a Zerk fitting?

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.

What does ZERK mean?

zerk in American English

(zɜrk ) noun. a small metal fitting through which grease can be inserted into a mechanical joint that requires periodic lubrication.

What is a hydraulic type grease fitting?

Grease fittings, sometimes called grease nipples or Zerks, are small hydraulic check valves used on bearings and similar mechanical assemblies to supply lubricant to internal parts. A grease gun, either manual or powered, attaches to the fitting through a hydraulic coupler to allow a pressure-resistant connection.

How do you know when a grease fitting is full?

If this is the case, the best tactic is to “feel” the grease into the bearing cavity until slight resistance or back pressure is felt against the trigger, or lever, signaling the bearing cavity is now full.

Are grease fittings self tapping?

Features: Self-Tapping Grease Fittings are also known as Thread Forming or Spin Drive Grease Fittings. They have special tapered drive threads for fast and economical production line installation. Their special hardened threads allow the fitting to be screwed into a drilled hole, eliminating the need to tap.

What is NPT in piping?

The best known and most widely used connection where the pipe thread provides both the mechanical joint and the hydraulic seal is the American National Pipe Tapered Thread, or NPT. NPT has a tapered male and female thread which seals with Teflon tape or jointing compound.

Are all grease gun nipples the same size?

Are all grease guns the same size? There is effectively just one size. There are some other weird ones out there, the common being button head I believe, but if it looks like a standard grease zerk it is going to be the standard size.

What is the difference between NPT and PTF threads?

NPT stands for National Pipe Taper. seal through thread form deformation at assembly, while NPT thread roots are designed to allow clearance with mating thread crests on assembly. While NPT and NPTF are both designed to screw together, NPT requires a seal to be leak proof while NPTF do not.

Is NPT fine thread?

NPT is a U.S. standard for tapered threads used on threaded pipes and fittings. In contrast to straight threads that are found on a bolt, a taper thread will pull tight and therefore make a fluid-tight seal.

Can you use Nptf with NPT?

Since NPT threaded parts require sealing compounds, it is acceptable to use an NPTF tap for NPT applications. However, NPT taps cannot be used for NPTF applications, as it will likely produce a thread that will leak.

Is ZERK a word?

Yes, zerk is in the scrabble dictionary.

Who invented the Zerk fitting?

Oskar Zerkowitz emigrated to the United States and changed his name to “Oscar Ulysses Zerk”. He was also known as “Oscar V. Zerk”. He became a world-famous inventor and one of his most prominent creations was a grease fitting known as “the zerk”.

What kind of grease for tie rod ends?

Grease – You should use the OEM suggested grease or a Heavy Duty Lithium Synthetic or Marine grease. These are perfect for automotive applications and will last longer than other types.