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AN fitting 37° Flare is designed to SAE J514 standard. AN fittings are used normally in Army and Navy instrumentation.
Unit of Measure

Specifications

Z Series Ferrule

Yes

Material

Alloy 600

Moly Coating

None

Dimensions

D - Tube O.D.

1/4 in6.4 mm

AN Tube Flare Size

1/4 in6.4 mm

Thread Type

U

T - Thread Size

7/16-20

E - Min.

4.3 mm

h - Width Across Flat

1/2 in12.7 mm

H - Width Across Flat

9/16 in14.3 mm

A

15.2 mm

B

17.8 mm

l

30.2 mm

L

37.6 mm