MIL-DTL-13531J
TABLE I. Hose dimensions Continued. 1/ 2/
Overall outside diameter
Hose size
Type I
Type I
Types II and III
Types II and III
dash
class A
class B
class A
class B
number
inches
inches
inches
inches
(mm)
(mm)
(mm)
(mm)
0.500 ± .031
0.465 ± .023
0.625 ± .031
0.535 ± .027
3
(15.88 ± 0.79)
(13.59 ± 0.69)
(12.70 ± 0.79)
(11.81 ± 0.58)
0.625 ± .031
0.527 ± .023
0.687 ± .031
0.593 ± .027
4
(17.45 ± 0.79)
(15.06 ± 0.69)
(15.88 ± 0.79)
(13.39 ± 0.58)
0.688 ± .031
0.590 ± .023
0.750 ± .031
0.660 ± .027
5
(19.05 ± 0.79)
(16.76 ± 0.69)
(17.48 ± 0.791)
(14.99 ± 0.58)
0.781 ± .031
0.684 ± .023
0.843 ± .031
0.754 ± .027
6
(21.41 ± 0.79)
(19.15 ±0.69)
(19.84 ± 0.79)
(17.37 ± 0.58)
0.906 ± .031
0.805 ± .031
0.968 ± .031
0.874 ± .031
8
(20.45 ± 0.79)
(24.59 ± 0.79)
(22.20 ± 0.79)
(23.01 ± 0.79)
1.031 ± .031
0.930 ± .031
1.093 ± .031
1.000 ± .031
10
(23.62 ± 0.79)
(27.76 ± 0.79)
(25.40 ± 0.79)
(26.19 ± 0.79)
1.187 ± .031
1.086 ± .031
1.250 ± .031
1.156 ± .031
12
(27.58 ± 0.79)
(31.75 ± 0.79)
(29.36 ± 0.79)
(30.15 ± 0.79)
1.313 ± .031
1.211 ± .031
1.375 ± .031
1.281 ± .031
14
(30.76 ± 0.79)
(34.93 ± 0.79)
(32.54 ± 0.79)
(33.35 ± 0.79)
1.500 ± .046
1.430 ± .031
1.562 ± .046
1.500 ± .031
16
(36.32 ± 0.79)
(39.67 ± 1.17)
(38.10 ± 0.79)
(38.10 ± 1.17)
1.812 ± .062
1.741 ± .047
2.000 ± .062
1.867 ± .047
20
(46.02 ± 1.57)
(44.22 ± 1.19)
(50.80 ± 1.57)
(47.42 ± 1.19)
2.062 ± .062
1.968 ± .047
2.250 ± .062
2.148 ± .047
24
(52.37 ± 1.57)
(49.99 ± 1.19)
(57.15 ± 1.57)
(54.56 ±1.19)
2.625 ± .062
2.500 ± .047
2.750 ± .062
2.648 ± .047
32
(66.68 ± 1.57)
(63.50 ± 1.19)
(69.85 ± 1.57)
(67.26 ± 1.19)
1/ Dimensions are in inches.
2/ Metric equivalents are given for information only.
3.4.5 Hose lengths. Only lengths greater than 3 feet (0.91 m) are permitted and their tolerance shall
be +1% unless otherwise specified. Bulk hose shall be furnished in any length, except that not more
than 10 percent may be furnished in random lengths between 10 to 20 feet (3.05 to 6.10 m) and not
more than an additional 10 percent may be furnished in random lengths between 3 and 10 feet (0.91 to
3.05 m).
3.5 Hose assembly construction. Hose assemblies shall consist of hose with fittings assembled on
each end. Unless otherwise specified, one fitting in the hose assembly shall be of the male type and
one of the female type. Hose assembly length and tolerances shall be in accordance with SAE-J517 or
the applicable specification sheet.
3.5.1 Hose. Hose shall be constructed in accordance with SAE-J517.
3.5.2 Fittings (straight, 45°, and 90°). Fittings unless otherwise specified fittings shall be constructed
in accordance with SAE-J516. The female type shall incorporate a swivel nut. Dimensions and
materials of fittings shall conform to the applicable drawings and as specified herein (see 3.1 and 6.2).
8
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