MIL-DTL-27500H
4.3.18 Shield solderability. Cables with tin and silver coated shields (single shield symbols T, S, M, G, H, J, and double shield
symbols V, W, K, A, B, D) shall be tested in accordance with MIL-STD-202, method 208 with the following additions and
exceptions:
a. The cable specimen shall be at least seven inches long.
b. The shield shall be exposed for at least 3 inches on the specimen sample under test.
c. A nominal seven inch long standard copper wrapping wire shall be applied to the
exposed shield with a spiral wrap around the circumference of the shield. The gap
space of the turns of the spiral wrap shall be 0.125 - 0.250 inches and the distance
between the end of the exposed shield and the wrapping wire shall be at least 0.50 inches.
d. Do not steam age the sample before solder immersion.
4.4 Cable diameter. Finished cable diameter as measured in a. through c. below shall not exceed the maximum cable diameter
calculated as follows:
Unshielded, shielded and single jacketed cables.
Maximum O.D. = (b x A) + (4.45 x d) + (4 x t) (inches).
Double shielded and jacketed cables.
Maximum O.D. = (b x A) + (9.90 x d) + (7 x t) (inches).
Double shielded and single jacketed cables.
Maximum O.D. = (b x A) + (9.90 x d) + (4 x t) (inches).
Where O.D. = outside diameter of the cable.
b = Maximum diameter of basic wires in inches.
A = Cable factor from column A of table IV.
d = Round shield wire diameter or thickness of flat shield wire.
t = Minimum jacket wall thickness as listed in table V, (= 0 for unjacketed cables).
a. For all constructions except three-conductor cables, the measured diameter of the finished cable shall be directly determined
with a micrometer, caliper or dial micrometer as the greatest straight line dimension of a cross-section of the cable.
b. For three-conductor unshielded-unjacketed cable only, increase the caliper or dial micrometer reading by 7.7 percent to
obtain finished cable diameter.
c. For three-conductor shielded, jacketed or shielded and jacketed cable only, increase the caliper or dial micrometer reading
by 15 percent of the specified nominal or median diameter of the basic wire, as given in the applicable wire specification, to obtain
finished cable diameter.
4.5 Cable weight.
4.5.1 Measured. The finished cable shall be weighed in accordance with MIL-STD-2223, method 6002 .
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