MIL-DTL-81581/5B
3.5.3 Strength.
3.5.3.1 Tensile load. The hose, when tested as specified in the general specification, shall
not separate from the end connector or the molded end.
3.5.3.2 Static load. The hose, when tested as specified in the general specification, shall not
show a deflection on the outside diameter of the hose of more than 25 percent of the original
value. The outside diameter of the hose, when checked as specified with the load removed, shall
be within 5 percent of the original value.
3.5.4 Restraint cord elongation and tensile strength. When the applicable control drawing
specifies a restraint cord, the restraint cord shall have a 30 percent maximum elongation and a
minimum tensile strength of 70 pounds, when tested as specified in the general specification.
3.5.5 Weight. When tested as specified in the general specification, the weight of the
Type I hose shall be not greater than 5.0 ounces per foot of nominal specified length of hose.
The weight of the Types II and III hoses shall be not greater than 7.0 ounces plus 6.0 ounces per
foot of nominal specified length of hose.
4.
VERIFICATION
4.1 Sampling and inspections. Sampling and inspections shall be in accordance with the
general specification and as specified herein.
4.1.1 Qualification inspection. The qualification inspection of the hose assembly shall
consist of the following examinations and tests from the general specification:
Visual examination
Polarity (color code) and electrical continuity, Procedure I
Insulation resistance, Procedure I
Elongation, Procedure II
Delamination, Procedure I
Odor, Procedure I
Cleanliness, Procedure I and II
Leakage, Procedure II
Flexibility
Type I, Procedure II
Types II and III, Procedure IV (under environmental conditions, Procedure III)
Minimum burst pressure, Procedure II
Tensile load, Procedure IV
Static load, Procedure I
Restraint cord elongation and tensile strength
Low temperature, Procedure I
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