so i was looking to get some fittings and hose and low behold i started playing chicken with myself in my head . i used to know this stuff,but somehow it was confusing so i looked it up to refresh my brain
figured some of you may find this info handy as well, its just so simple once you see it
of course its inch sizing,but for us in the usa that still number one in hose and fittings
http://www.hoseandfittingsetc.com/technical-info/tips/dash-size
How to Interpret Hose & Tube "Dash Sizes"
People new to hydraulic and pneumatic industries often ask about what is a hose or tube dash size. Simply put, a dash size refers to a diameter of a hose or tube in 1/16" increments.
For example, -6 hose would indicate a hose with inside diameter of 6/16" - or 3/8". In another example, a -10 tube would indicate a tube with an outside diameter of 10/16" - or 5/8".
Did you notice that in case of a hose diameter, we talked about inside diameter, and in case of a tube, we refered to an outside diameter? That is not an accident. Hoses are measured by inside diameter, and tubes are measured by outside diameter. As a matter of fact, that is how the hoses and tubes are differentiated. Most people think about hoses as being flexible and tubes as being rigid, but in fact, there are some very rigid hoses, and some very flexible tubes.
For example, nylon tubing is very flexible, and flexible metal hoses are (relatively) very rigid.
So remember that a dash size is a size of hose or tube expressed in sixteenths of an inch, hoses are measured by inside diameter, and tubes are measured in outside diameter.
That's all there is to it!
hose-v-tube-size.png
HOSE SIZE IS DETERMINED BY ITS INSIDE DIAMETER (A)
TUBE IS DETERMINED BY ITS OUTSIDE DIAMETER (B)
figured some of you may find this info handy as well, its just so simple once you see it
of course its inch sizing,but for us in the usa that still number one in hose and fittings
http://www.hoseandfittingsetc.com/technical-info/tips/dash-size
How to Interpret Hose & Tube "Dash Sizes"
People new to hydraulic and pneumatic industries often ask about what is a hose or tube dash size. Simply put, a dash size refers to a diameter of a hose or tube in 1/16" increments.
For example, -6 hose would indicate a hose with inside diameter of 6/16" - or 3/8". In another example, a -10 tube would indicate a tube with an outside diameter of 10/16" - or 5/8".
Did you notice that in case of a hose diameter, we talked about inside diameter, and in case of a tube, we refered to an outside diameter? That is not an accident. Hoses are measured by inside diameter, and tubes are measured by outside diameter. As a matter of fact, that is how the hoses and tubes are differentiated. Most people think about hoses as being flexible and tubes as being rigid, but in fact, there are some very rigid hoses, and some very flexible tubes.
For example, nylon tubing is very flexible, and flexible metal hoses are (relatively) very rigid.
So remember that a dash size is a size of hose or tube expressed in sixteenths of an inch, hoses are measured by inside diameter, and tubes are measured in outside diameter.
That's all there is to it!
hose-v-tube-size.png
HOSE SIZE IS DETERMINED BY ITS INSIDE DIAMETER (A)
TUBE IS DETERMINED BY ITS OUTSIDE DIAMETER (B)
