MIL-DTL-24643C
3.4.8.2 Identification methods.
3.4.8.2.1 Method 1. Identification Method 1 shall be surface printing of both number and color designations.
The legend shall be printed in contrasting color: preferably white ink on black or dark background or black ink on
white or light background. The printing can be on the conductor insulation provided the covering or jacket is
transparent. The printing shall be on the covering or jacket if it is not transparent. The legend shall be repeated at
intervals not exceeding 3 inches and alternate legends shall be inverted. For example 10 ORANGE BLACK
. The character type shall be block and shall have a height in accordance with the
diameter over which it is applied as follows:
Height of character
Diameter range (inch)
approximate (inch)
0.045 to 0.070
0.025
0.070 to 0.095
0.031
0.095 to 0.115
0.047
0.115 to 0.200
0.062
0.190 to 0.250
0.078
0.235 to 0.325
0.094
0.330 and larger
0.125
3.4.8.2.2 Method 2. Identification Method 2 shall be the use of translucent (opaque) polyester tapes which
have been printed with both the number and the color designation. The legend shall be printed with black ink and
shall be repeated at intervals not exceeding 3 inches and alternate legends shall be inverted. The character type shall
be block and shall be approximately 3/32 inch height.
3.4.8.2.3 Method 3. Identification Method 3 shall be the use of solid base colors or solid base colors with
tracers as required. The base color may be either the color of the insulation or the color of a coating or covering
applied to the insulation. The tracers shall be approximately 1/32 inch wide ink stripes of the required color applied
helically with 1½+¼ inch lay. If two tracers are required, the second shall be half the width of the first.
3.4.8.2.4 Method 4. Identification Method 4 shall be the use of colored braids. Tracers shall consist of the
required colors applied by three adjacent carriers. Where two tracers are required, they shall be applied with reverse
lay.
3.4.8.2.5 Method 5. Identification Method 5 shall be the use of the printed letter on the outermost insulating
tape or the printed letter on a polyester binder tape over the insulating tapes. The letters shall be approximately 3/16
inch high and shall have been printed at intervals not exceeding 3 inches prior to the application of the tape to the
conductor. If the insulating tapes are white, no printing is required on the B (white) conductor.
3.4.8.2.6 Method 6. Identification Method 6 shall consist of numerals printed in ink on the conductor
insulation. For conductors having a jacket directly over the insulation, the numerals may be printed in ink on the
jacket, at the manufacturer's option. White ink shall be used for a red or black background; black ink shall be used
for a white background. Numerals shall be perpendicular or parallel to the longitudinal axis of the conductor (see
figure 1). Numeral width shall be proportional to conductor outside diameter (o.d.) as shown in Method 1 (see
Numeral width shall be ⅓ numeral height. Each numeric legend shall be underlined. Two digit legends which are
parallel to the longitudinal axis shall have the bottom numeral underlined. Legends shall be alternately inverted and
shall be repeated at intervals not greater than 1½ inches.
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