Grease Fittings
Grease Equipment
Greetje Wesselink
Grease Equipment

Grease Fittings and their accessories


Grease fittings (or grease nipples, Zerk fittingsgrease zerks, Alemite fittings, Zerks) are lubrication points in mechanical systems that add grease from grease guns. By applying pressure to a ball valve in the fitting, grease flows into the lubricating chamber, but cannot flow out.

Grease fittings come in different sizes, threads, lengths, adaptations and styles. Below we’ll discuss the common characteristics and the more important things to know about grease fittings and their accessories.

Grease fitting (Zerks) styles

If you need SAE or metric zerks we’ve got a collection in packages of 5 and 10, and in kits, offering: straight, 45, 65  and 90 degree angles in any size you might want.

Grease fittings: straight, angled in 45 and 90 degrees

The SAE and Metric Assorted 80 Piece Kits incorporate the most popular sizes; these Grease Fittings are manufactured to the most stringent quality standards.

SAE and Metric grease fitting kits

4-way Grease Tool (easy-out-tool)

You may also need a four-way or an easy-out tool. These come in two different sizes to deal with different grease fittings and make it really easy to replace broken grease fittings or functional zerks that you maybe just want to swap out for something newer.


If you run into damaged or broken grease fittings, the 4-Way Grease Fitting Tool is your all-in-one solution. It can:

  1. Install,
  2. Remove,
  3. Repair, and
  4. Maintain

any Straight, Angled, and Pin Zerk Fittings.

It makes maintenance a snap and is easier than looking for the correct wrench size; it has a built-in rethreader and extractor.

T-Style Design

It has a 2” T-design and a knurled body for maximum grip.

You can install straight and angle zerk fittings and rethread or remove straight, angle, and pin fittings.


Designed to retap holes for new installation, and also helps with the removal of worn or broken fittings.

Grease Fitting Unblocker (Professional)

The Unblocker opens clogged grease fittings and loosens hardened grease joints

The Grease fitting Unblocker removes old hardened grease, dirt and debris from clogged up bearings. Simply changing the fitting in most cases does not fix the issue, because the blockage is most often located in the joint itself.

The Grease fitting Unblocker has an all steel construction and works by injecting a light viscosity oil into a grease-joint through pressure, generated by the tap of a hammer. Hereby liquefying the old grease or dirt, and forcing it out the other end of the joint. Once the clog has been removed, simply grease your joint as normal, using your grease gun.

The Grease Fitting Unblocker comes complete with grease coupler for connection into the grease fitting and hose for hard to reach fittings.

Drive Fit – Grease Fitting Installers

Handy grease fitting drive tools make installing straight and angeled drive type fittings and zerks easy. Insert a drive tool over the fitting and tap opposite end with a hammer to seat.

The tools are made of heavy duty steel with a zinc-plated finish.

Available in 2 types: straight and angled

Drive-fit grease fitting installers-straight-and-angled

Grease Fitting Protectors (caps)

OilSafe grease fitting protectors are made from a durable plastic material and feature a flexible, yet snug fit to ensure a tight seal around the fitting. The protectors are also designed with a tab for easy installation and removal, and can be reused multiple times.

The OilSafe grease fitting protectors are designed to fit standard SAE and metric grease fittings, and come in 10 colours to help identify different lubricants or lubrication points.

Grease fitting protectors oilsafe 17/32 inchGrease fitting protectors - 17/32" - 10 colours


The benefits to using grease fitting protectors, including:

Contamination prevention: One of the primary benefits of using grease fitting protectors is that they help prevent contaminants, such as dirt, dust, and moisture, from entering the grease fitting. Contaminants can cause premature wear and damage to bearings and other moving parts, leading to increased maintenance costs and downtime.

Extended component life: By keeping contaminants out of the grease fitting, the use of grease fitting protectors can help extend the life of components by reducing wear and tear on bearings and other moving parts. This can lead to lower maintenance costs and longer equipment life.

Improved lubrication: Grease fitting protectors can help ensure that the right amount of lubricant is delivered to the component, as contaminants can interfere with the proper flow of grease. This can improve the efficiency of the lubrication system and reduce the risk of component failure.

Easy identification: Many grease fitting protectors are available in different colours, allowing for easy identification of different lubrication points or types of lubricants. This can help prevent confusion and ensure that the right lubricant is used in the right location.

The OilSafe grease fitting protectors are supplied in bags of 100 and are available in the sizes: 1/4" , 13/32" ,  17/32" .

Grease fitting protectors - diametersAvailable sizes

Overall, the use of grease fitting protectors can help improve equipment reliability, reduce maintenance costs, and extend the life of components, making them a worthwhile investment for many industries.

Clear Protective Lenses

Clear protective lenses can be used in conjunction with grease fitting protectors (and ID Tabs) to provide an additional layer of protection against contamination.

Grease fitting protectors and lens

These lenses are typically made from a clear plastic material, such as polycarbonate, and fit securely into the top of the grease fitting protector. The lenses help to prevent dust, dirt, and other contaminants from entering the grease fitting while still allowing for easy inspection of the fitting and grease level.

The lenses come in bags of 100.

Grease fitting protectors and lens

Grease Fitting Protector Kits

Apart from the above mentioned grease fittings packed in bags, they also come in pre-assembled kits, consisting of:

  • 3-colours (Blue, Purple and Red) and
  • 6-colours (Blue, Purple, Red, Black, Green and Yellow).

This enables you to dedicate a specific colour to a specific grease.

This OilSafe colour-coded system enables the dedication of a specific colour to a specific grease. The GFP has space for labeling, identifying which grease is required for the fitting. You can create your own custom 0.5″ labels or choose from a selection of matching pre-printed 0.5″ label kits.

Features of the OilSafe Grease Fitting Protector Kits:

  • they come in various sizes (1/4″, 13/32″, 17/32″)
  • suit most common grease fittings.
  • Recessed head for secure label placement.
  • Easy removal from zero fitting — even when wearing gloves.
  • Durable industrial grade materials.
  • Makes grease fittings easy to locate

The 3- and 6-colour grease fitting protector kits:

Grease fitting protector kit

The OilSafe Grease Fitting Protector Kits provide a comprehensive solution for protecting grease fittings from contamination and extending the life of machinery and equipment.