MIL-DTL-3432J
3.2.7.2 Jacket color. The jacket color shall be black in accordance with MIL-STD-104.
3.2.8 Diameter tolerance.
3.2.8.1 Cable diameter tolerance (except parallel conductors). The outside diameter of cables having a specified
diameter of less than .500 inch (12.7 mm) shall have a tolerance of ± .015 inch (.381 mm). The outside diameter for
cables having a specified diameter from .500 to .700 inch (12.7 to 17.8 mm) inclusive shall have a tolerance of ± .020
inch (.508 mm). The outside diameter for cables having a specified diameter of more than .700 inch (17.8 mm) shall
have a tolerance of ± 3%. The diameter of a cable at any cross section (except for parallel conductor cable) shall be
considered the average of the major and minor diameters at that cross section. If a special tolerance is required on
the outside diameter, such tolerances shall be indicated at the end of the type designation (see 1.2.1.8).
3.2.8.2 Parallel conductors. The outside diameter of a parallel conductor cable shall have a tolerance of ± .040
inch (1.02 mm) for a major diameter and a tolerance of ± .030 inch (.762 mm) for the minor diameter. If a special
tolerance is required on the outside diameter, such tolerances shall be indicated at the end of the type designation
(see 1.2.1.8).
3.3 Spark test. The insulated conductor shall withstand the applicable voltage specified in table XVII.
3.4 Voltage withstand. The insulated conductor in the finished cable shall withstand the specified dielectric voltage
in table XVII.
3.5 Insulation resistance. When measured, the insulation resistance shall be not less than the value obtained from
the following formula:
R = K log10 d + 2c
d
Where:
R - Insulation resistance in megohms 1,000 feet.
K - 2,000 for SBR, 50,000 for polyethylene, and 10,000 for EPDM, TPE, and crosslink polyethylene.
d - Average diameter under the insulation.
c - Specified nominal insulation thickness.
NOTE: d and c shall be expressed in the same units.
3.6 Direct current resistance. The cable resistance shall not exceed the values shown in tables IV and V.
3.7 Surface resistance. Black jacket, black insulation, and black striped jackets and insulation shall have a surface
resistance of 10 megohms per inch minimum when tested in accordance with method 6041 of FED-STD-228, or 100
megohms minimum when tested in accordance with method 1340 of UL 1581.
3.8 Hot creep (crosslink polyethylene only). The elongation and set shall not exceed the specified values in table
B-II.
3.9 Cold bend. The insulation, jacket, and inked markings shall not crack under bending at the applicable lower
temperature listed in table II.
3.10 Polyethylene shrink-back. When tested, it shall shrink back a maximum .0625 inches (1.59mm) and shall not
split or crack.
3.11 Polyamide heat stability. There shall be no tears or cracks in the polyamide materials. Wrinkles or softening
and flowing of the polyamide shall not be cause for rejection.
3.12 Marking. The cable jacket or marker tape shall be marked in accordance with MIL-STD-686. In addition, the
manufacturer's name or trademark and the year of manufacture shall be included. The outer surface of the cables
shall be smooth and free from raised markings. All letters and numbers in the marking shall be of the same height.
There shall be no spacing between letters and numbers in the type designation, for example, M3432-
06HOF(6/18)0525.
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