an-fittings

AN Fitting Dimensions and Hose Size Reference

AN (Army-Navy) fittings are a standardized type of fitting commonly used in the automotive, aerospace, and marine industries for their reliability and durability. These fittings are available in a range of sizes, with each size given a numerical designation (e.g., 4AN, 6AN, etc.). In this guide, we will explore the dimensions of AN fittings, covering both male and female thread tables, corresponding AN sizes, equivalent nominal OD tube sizes, hose inner dimensions, and male fitting inner dimensions. We will specifically focus on AN sizes ranging from 4AN to 16AN.

AN Fitting Dimensions

The following tables provide the dimensions for male and female AN fittings, organized by AN size. The dimensions listed include the equivalent nominal OD tube size, hose inner dimension, and male fitting inner dimension.

Table 1: Male AN Fittings

AN Size Thread Size (Male) Nominal OD Hose/Tube Size Male Fitting Inner Dimension Closest NPT Size
4AN 7/16"-20 1/4" (0.250") 0.194" 1/8" (0.125")
6AN 9/16"-18 3/8" (0.375") 0.302"
1/4" (0.250")
8AN 3/4"-16 1/2" (0.500") 0.390"
3/8" (0.375")
10AN 7/8"-14 5/8" (0.625") 0.511"
1/2" (0.500")
12AN 1-1/16"-12 3/4" (0.750") 0.610"
3/4" (0.750")
16AN 1-5/16"-12 1" (1.000") 0.815"
1.25" (1.250")

Table 2: Female AN Fittings

AN Size Thread Size (Female) Thread Size (Male) Hose Inner Dimension
4AN 7/16"-20
7/16"-20
0.220"
6AN 9/16"-18
9/16"-18
0.340"
8AN 3/4"-16
3/4"-16
0.440"
10AN 7/8"-14
7/8"-14
0.560"
12AN 1-1/16"-12
1-1/16"-12
0.690"
16AN 1-5/16"-12
1-5/16"-12
0.880"

 

Understanding the dimensions of AN fittings is essential when selecting the appropriate size for your application. By referring to the tables above, you can easily identify the correct male and female thread sizes, nominal OD tube sizes, hose inner dimensions, and male fitting inner dimensions for your specific needs.

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