MIL-DTL-5898H
3.3.3 Material integrity. Materials and component parts of these cords shall exhibit no abnormalities
or defects such as decomposition, separation or deterioration when examined visually.
3.4 Insulated conductors.
3.4.1 Individual strands. The individual strands shall be American Wire Gauge (AWG) 40 cadmium
copper (cadmium bronze) wire and shall be tinned in accordance with ASTM B33 before bunching. The
minimum tensile strength of the strands after tinning shall be 90,000 pounds per square inch and shall be
of at least 80 percent conductivity grade.
3.4.2 Conductors. The conductors shall be bunch stranded and the lay of the strands shall be
approximately one-half inch. The nominal area of each conductor shall be 442 circular mils and the
minimum area shall be 430 circular mils.
3.4.3 Wrap. Wrapping material shall in accordance with MIL-C-572. The yarn may be omitted
provided the conductors in the finished cords are free stripping and free from any detrimental effects that
will interfere with normal soldering of the strands of the conductors in the finished cord.
3.4.4 Insulation. The insulation compound for the individual conductors shall be formulated to
provide a material that meets the electrical, air-aging, and bending requirements specified herein.
3.4.4.1 Physical requirements. The insulation shall show no evidence of cracking or other damage,
and the insulated conductor shall be flexible and resilient throughout the temperature range from
-55 to 85°C. The thickness of the insulation at any point along the conductor shall be not less than .010
inch (.254mm).
3.4.4.2 Outside diameter of insulated conductor. The outside diameter of the insulated conductor
shall be .060 inch (1.52mm) nominal.
3.4.5 Insulation color. The insulation of individual conductors shall be colored as specified in table II.
The colors shall be class 1, nominal chip, shall be in accordance with MIL-STD-104.
TABLE II. Insulation color of individual conductors.
Conductor number
WF-5/U
WF-14/U
WD-34/D
WM-53/U
WM-85/U
1
White
Red
Red
White
Red
2
Red
Green
Green
Red
Green
3
Green
White
-
Green
White
4
Black
Black
-
Black
Black
5
-
-
-
Yellow
Yellow
3.5 Copper braid. Copper braid, where used, shall be fabric cored and shall be composed of eight
carriers of AWG 36 tinned copper wire, three ends per carrier, having a height of spiral of .200±.020 inch
(5.08 ±.508mm). The tinned copper wire shall be in accordance with ASTM B33. The fabric core shall be
fungus-resistant cotton, and the finished braid shall be capable of 2,000 flexing cycles without causing
electrical discontinuity.
3.6 Staycord. Staycord shall be braided of fungus-resistant cotton threads. The staycord for all
cords except type WD-34 shall have a diameter of .052±.010 inch (1.32 ±.254mm) and shall have a
4
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