An Fittings Sizes Guide

Sizes for rigid tubes were already standardized with sizes called out by tubing od 3 16 1 2 etc.

An fittings sizes guide. These are the same thread sizes that have been used in aircraft and industrial applications for many years. Each an size number has its own standard thread size see column three of the chart. 1 1 8 1 7 16 24. For some odd reason the automotive industry wants to make an fittings sound like something special.

Use this guide to help you find the pipe and fitting sizes you need for your next project. Huge selection over 100 000 products from the top performance brands. Hose size chart fractional equivalent all dimensions are in inches unless otherwise noted. A half inch plastic elbow for example has an outside diameter of about 1 1 4 inches.

Fittings can be just as confusing. 1 3 8 1 45 64 28. Each an size also uses its own standard thread size. The idea behind an hoses and an fittings was to provide a flexible alternative to rigid tubing in plumbing systems on aircraft and military vehicles.

Use this handy chart to determine the an fitting size based on corresponding thread sizes. Their inside diameters must be large enough to fit over the pipe s outside diameter. The pit stop usa difference we re the experts we help you find a way to win. In order to plumb your vehicle with a minimum amount of time effort and money you should know the basics about hose hose ends and adapter fittings.

An fittings are a flare fitting using 37 flared tubing to form a metal metal. Therefore a 8 an size would be equal to 1 2 inch od tube. An hose sizes were designed to match the id sizes of these rigid tubes. However this system does not specify the id inside diameter of the tubing because the tube wall can vary in thickness.

Can you see the confusion starting. Hose diameters are assigned an numbers. 1 1 2 1 13 16 32.