Everything You Need to Know About Cam Locks
                     Everything You Need to 
Know About Cam Locks
MEI Locks is paramount quality cam-locks supplier, 
complies with the highest quality standards. These 
locks are perfect for accommodating.
• Picking readymade locks for fittings can be tricky. 
A good lock must accommodate perfectly, without 
any visible fittings. This article provides a 
comprehensive overview of cam-lock fittings 
available, accessories, selecting the right fitting, 
maintenance, etc. 
How to choose a readymade lock?
• There are few considerations while picking the perfect lock 
for your doors. First, the type of door has to be identified. 
Whether it is sliding, folding, flush fitting, or wooden, etc. 
Next, finishes, texture and touch are to be assessed. This 
includes looking for carvings, moldings, and the thickness 
of stiles and rails. Third, price has to be considered. Since, 
quality determines the price, hence you can figure out what 
quality product you want to get. The fourth and yet another 
important thing to consider is aesthetics. 
What is a Cam-lock fitting? 
• Known as groove coupling, a cam-lock fitting connects two 
hoses together in different materials so that material from 
one can be transferred to the other. Because of their ease to 
use, cost-effectiveness and efficiency, they are highly 
popular for coupling.
• Cam-lock fittings have a wide usage because of their 
versatility. They are easy to maintain and don’t get 
damaged easily because they don’t require threads for 
connecting the coupling halves. They are ideal for using in 
industries such as petroleum, and chemical trucks.
How Does a Cam-lock Work?
• A Cam-lock consists of two parts- an adapter and a coupler. 
• To connect, slide outwards the clamps on the coupler, and 
fix the adapter into coupler while considering their sizes. 
Once both halves are firmly fixed, close both clamps at the 
same time. Closing both clamps at the same time ensures 
that the seal is tightly assembled for safe transfer of liquids 
because the adapter is pulled down consistently.
• To disconnect, depressurize the hose assembly first and 
then reverse the process.
How to Measure the Dimensions of 
Cam-lock?
• For a flawless cam-lock fitting, it is important to take 
precise measurements. Measuring a metallic cam-lock 
fitting is simple. The hose tail’s measurements define the 
cam-lock size. Whatever the size of hose tail is, that would 
become measurement of cam-lock coupling.
• Polypropylene’s measurement is bit different, because the 
head sizes of each manufacturer vary and they do not have 
any international standard. There are variations in 
measured size and the fitted body. Generally, cam couplings 
are measured by measuring the Outside Diameter of the 
head, or the Inside Diameter of the coupler. 
How to Choose the Right Cam-
lock Fitting?
• The fitting specifications include seven fields, known as 
STAMPED. In Stamped, S is for Size, T for Temperature, A 
for Application, M for Material/media, P for Pressure 
rating, E for End fittings and thread type, and D for 
Delivery. Delivery meaTnimse as Ndedwi tRioomnaanl information such as 
material certs.
What is the Standard for Cam-locks 
manufacturing?
• The standard for groove couplings is Mil-C-27487, US 
military specification, now replaced with A-A-59326D. 
Both standards are compatible, which allows 
interchangeability of couplings using the same 
specification. The Mil-C-27487 standard was based on 
materials, tolerances, inspection procedures, casting 
methods, dimensions, and pressure ratings. 
Best lock manufacturer comply with defined standards.
European Standard
• Approved by The European standard, EN 14420-7 is 
applied to cam & groove couplings. It is manufactured as 
per American military standard discussed above. The hose 
connection does not follow this standard; it is only 
applicable to the coupling.
Can Cam-locks be interchanged?
• The cam & groove couplings can be interchanged between 
different manufacturers. However, these sizes cannot be 
accommodated- ½” (12.5mm), 5” and 8”. Because of 
different versions of cam & Groove in the market, A-A-
59326A Mil Specification does not apply to 5” and 8”.
What Are the Limitations of Using 
Cam-locks in Assemblies?
• At times, the hose shanks with rough edges are hard to 
connect with ferrule or sleeve. An effort to fit them 
together can permanently damage the hose, by cutting into 
the inner wall of the hose. This can cause leakage or hose 
failure. Also, Cam & Groove couplings cannot be used for 
steam or compressed air applications.
Why you Need High Quality Cam-
locks
• Although, there are many manufacturers of cam-locks out 
there, but not all of them Specialty lock manufacturers. 
This becomes even more complicated if both halves of the 
coupler are from different manufacturers. This problem 
does not arise for North American or European 
manufacturers because they follow accepted certified 
specification rigidly. 
Thank You