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A/N Fittings -Plumbing We Will Go !
Most likely, at one time in your life you have seen a killer custom car or race car that has had fittings like these and wondered , how do they work ? And where are the clamps to how can I use them on my car ? Lets start with how these fittings came about. A/N fittings were originally designed for use in aerospace and military applications. The size & specifications were established by the military back in World War II, and stems from a joint standard agreed upon by the Army and Navy, hence AN. The Army-Navy involvement is also the origin of the red/blue color combination that was traditionally used in the anodized finishing process. AN sizes range from -2 (dash two) to -32 in irregular steps, with each step equating to the OD (outside diameter) of the tubing in 1 ⁄ 16 -inch increments. Therefore, a -8 AN size would be equal to 1 ⁄ 2 -inch OD tube. However, this system does not specify the ID (inside diameter) of the tubing because the tube wall ...