NOTE: A sealer is required for 'NPT' type fittings. of the fitting, and the AN fitting size with the closest-matching I.D.(inside dimension). The following chart shows the each size's thread-per-inch count, the I.D. While AN fittings depend on the outside diameter of a tube for sizing, NPT fittings depend on the interior diameter (I.D.) of the fitting itself. Common rebar sizes used in residential construction for houses are usually in sizes ranging from 3 rebar to 6. NPT sizes are the most commonly used fitting sizes for general plumbing, piping, and tubing use not quite as popular as AN for automotive use, but still very common. Keyword CPC PCC Volume Score gr40 rebar: 1. NOTE: A sealer is NOT required for 'AN' type fittings. The following chart shows the relationship between AN size, tube O.D., and SAE thread size: -AN A 'dash six' fitting translates to AN-6.Įach AN fitting has an established thread sizing. You will also find the dash (-) symbol or the word 'dash' itself used in conjunction with AN sizes. Because the actual thickness of tube walls can vary from brand to brand, the inside diameter of a tube is not used as a reference. 1-1 / 2 ' Chart 2 Take Off From Top of Line Union Regulated Air Globe Valve Regulated Air Air Line To Compressing Outfit PIPE THREAD.

of 2/16', or 1/8', while an AN 8 fitting will fit a tube with an O.D. For example, an AN 2 fitting will fit a tube with an O.D. Armed forces ('A' for army and 'N' for navy), describe the outside diameter (O.D.) of tubing in 1/16-inch increments. MARYLAND METRICS THREAD DATA CHARTS NATIONAL PIPE TAPERED THREAD (NPT).

The sizing chart and numbering system was deviloped during World War II where the armed forces used Nitrous Oxide systens to boost the power output of aircraft engines.ĪN sizes, originally developed for use by the U.S. AN / NPT / Metric / INCH (SAE) Conversion ChartsĬommonly used on Nitrous Oxide systens.

1 1 4 thread chart