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MIL-DTL-26666 Hose Assembly, Pneumatic, High PressureThis specification covers the requirements for a hose assembly, pneumatic, high pressure having a nominal working pressure of 4,000 psig \(275.79 bar\) in the operating temperature range of -65 to +160 Degrees F \(-53.89 Degrees C to 71.11 Degrees C\). DO NOT USE FOR OXYGEN. DO NOT USE ON AIRCRAFT.

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MIL-DTL-26666G

3.3.1.3 Outer protective cover. An outer protective cover extending the full length of the hose,

.125 to .250 inch (3.18 to 6.35 mm) from the end of the fitting, shall be furnished on the outside of the

hose. The cover shall be a minimum of .0625 inch (1.588 mm) thick, consist of an abrasion-resistant, oil-

resistant, and ozone-resistant chloroprene polymer or equivalent synthetic material compounded to meet

the requirements specified herein. The cover need not be bonded to the outer-most reinforcement ply,

but shall not be free to slip or turn along the length of hose. The cover shall permit gas that may effuse

from the inner tube to escape to the atmosphere.

3.3.2 Hose assembly configuration. The hose assembly shall meet the requirements as specified

herein.

3.3.2.1 Diameter. The inside and outside diameters of the hose shall be within the limits shown on

figure 1 as applicable to the hose size specified by the acquiring activity (see 1.2).

3.3.2.2 Length of hose assembly. The hose assembly shall be furnished in lengths as specified by

the acquiring activity (see 1.2). The hose assembly length shall be measured as shown on figure 1.

Hose size

Hose

hose

and fitting

coupling

Tube

min. inside

(dia)

size

(max)

bend rad

(mm)

(max)

designator

min

max

min

(mm)

.234

.703

.125

2.100

.375

.875

3.250

1/4

(5.94)

(17.86)

(3.18)

(53.34)

(9.53)

(22.23)

(82.55)

�.015

.297

.859

.188

2.470

.375

1.160

5.250

3/8

(0.38)

(7.54)

(21.82)

(4.78)

(62.74)

(9.53)

(29.46)

(133.35)

1.375

6.000

.422

1.000

.297

2.730

.438

1/2

(9.53)

(152.40)

(10.72)

(25.40)

(7.54)

(69.34)

(11.13)

.547

1.218

.391

3.020

.515

1.550

6.750

5/8

(13.89)

(30.94)

(9.93)

(76.71)

(13.08)

(39.37)

(171.45)

�.031

(0.79)

1.740

8.000

.672

1.375

0.547

3.230

.602

3/4

(44.20)

(203.20)

(17.07)

(34.93)

(13.89)

(82.04)

(15.29)

NOTES:

1. Dimensions are in inches.

2. Metric equivalents are for information only.

3. Length "L" shall be within +3% or -1% of specified nominal value.

4. Provisions for wrenching by a hex or flats on fitting body shall be optional.

FIGURE 1. Hose assembly details.