How to Measure a Camlock Fitting

Are you seeking the easiest and most effective solution to get a leak-free connection? Then, a camlock fitting can be your ultimate solution! These cam and groove hose fittings combine to form a totally sealed joint. The fittings are machined to tight tolerances and when moved or pulled in opposite directions maintain the integrity of the seal.

Camlock fittings are available in various sizes and are used in almost every industry, from transport and agriculture to construction and pharmaceuticals. You must ensure compatibility between the female couplers, male adapters and their respective thread-ends and hose tails.

How do you choose the right size of camlock fittings to suit your specific needs? Scroll down to find out!

An Overview of Camlock Fitting Sizing

Let’s kick off with the sizing of the camlock fitting – First, understand how the camlock connection system works - the male adapter should be inserted into the female coupler. The arms of the female coupler will rise. Employing pressure down on the arms to the closed position will ensure the seal. Once the connection is made, you can lock the arms in place using the R-Clips/ Pins provided.

Remember the golden rule—the coupling size should be the same as the adapter size. The thread-ends and hose barbs will follow the camlock sizing. You can refer to the chart below for a quick reference on how to measure for the right camlock fittings for your set-up.


Camlock SizeImperial NameMetric NameMale Outside Diameter
Code  InchesMillimeters
- 050 -1/2"15mm0.82520.995
- 075 -3/4"20mm1.04126.441
- 100 -1"25mm1.30933.249
- 125 -1-1/4"32mm1.30933.249


Guide to Choosing the Appropriate Camlock Fittings

Are you on your way to finding a quality camlock fitting? Then make sure you check the following:

  • What SIZE coupler/ adapter is needed?

This is determined by your existing hose and pipe end sizing. See the sizing table and discussion above for reference.

  • Determine the TYPE of coupler/ adapter that is going to be needed.

The Type is determined through a combination of whether you require a Coupler with male threads, female threads, or a hose barb. Same for whether you require an Adapter with male threads, female threads or a hose barb. The combination gives you a Type A, B, C, D, E, F, DC, or DP.

  • Consider the APPLICATON

The application will determine the camlock material best suited for the job. The material type of your Camlock needs to be compatible with the media moving through it. Readily accessible online corrosion databases can be accessed to determine compatibility. The nature of the media will also impact the performance of the gasket material. Compatibility with the gasket is also worth checking.

  • What MATERIAL is needed for the coupler/ adapter?

The type of material to be selected needs to align with the nature of the substance you are handling and the environment in which it is being applied. You should consider the different material properties, including resistance to corrosion, strength, maintaining structural integrity, and overall durability.


Camlocks are medium pressure couplings. Depending on material and size this will be between 50-300 psi. Polypropylene Camlocks have a max working pressure of 125 psi.

  • What is the TEMPERATURE range?

This should also be considered. Often it is the seal/ gasket material that could be the limiting factor here. Check the temperate ranges of the gaskets supplied as standard with your camlocks.

Why Should You Get the Right Camlock Fittings?

It is essential to source cam and groove fittings manufactured to the correct tolerances. We will explain why with the following pointers.

  • Convenience: The correct camlock hose fitting is designed to ensure a secure and leak-free quick connection for hoses and pipes or into fixed vessels. No time-wastage trying to force stubborn connections, stripping threads, and looking for tools.
  • Ensuring compatibility: the camlock fittings need to be interchangeable across industries and between users. A manufacturing standard ensures this - A-A-59326D superceding A-A-59326A, formally the MIL-C-27487 specification. Your supplier needs to comply with this specification which ensures interchangeability.
  • Ensuring efficiency: The right camlock fitting will help in reducing downtime and promoting overall operational efficiency. A user-friendly design of the camlock simplifies the assembly and disassembly of elements, ultimately saving time and labour costs.
  • Safety: Non-spec camlock hose fittings can lead to accidents, spills, or leaks, endangering personal safety and the environment. Using the right fitting is paramount in building and maintaining a safe work environment.

Wrapping Up!

It is crucial to take your time in accurately determining the sizing and application of your camlock hose fittings. In addition, you should always partner with experienced suppliers to get the most suitable camlock fitting solution. At Camlock Fittings the leading supplier of camlock hose fittings, bringing you quality camlocks at great prices from trusted suppliers. As a specialist in the wholesale and distribution of camlock fittings, we will not compromise on quality, price, or service.

Do you find it challenging to get the right supply of camlock fittings? We can help you at Camlock Fittings!