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Marking with identification tapes. |
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|  MIL-M-60903A (AR)
installation. Wires shorter than three inches, such as jumper
wires, need not be marked unless specifically designated on the
product drawing. If markings on individual wires in harnesses
and cables are not required by the product drawing, and such
marking would be desirable to facilitate production, manufactur-
ing may hot-stamp suitable designations on the wires.
3.2.3.2 Cables. - Identification designations on cables
shall be located on the product drawing and shall consist of a
double marking of the designations as shown on figure 2. Coaxial
cables and other manufacturer cables with tight-fitting jackets
shall be hot-stamped directly on the jacket (see 3.2.3.2.1). When
insulation sleeving is employed as an outer jacket over a bundle
of wires, the markings shall be applied to the flat sleeving be-
fore insertion of the wires.
3.2.3.2.1 Identification sleeves. - Marking of cables with
identification sleeves (see figure 3) is a special method which
may, when so specified, be used as an alternate to direct hot-
stamping of the outer jacket if the following conditions exist:
(1) on small cables where experience has shown that the thin in-
sulation is pierced in the stamping operation, (2) on manufactured,
multiconductor cables with extruded insulation where, due to the
twist and insufficient number of conductors underneath, ridges
appear to such an extent that a satisfactory marking cannot be
obtained, and (3) on insulation where properties of the material
are such that a satisfactory direct marking cannot be obtained.
Identification Sleeves shall not be used if a satisfactory
marking can be made by direct hot stamping of the outer jacket.
Identification sleeves, when used, shall be made from a suitable
length of polyvinyl sleeving complying with the requirements
of MIL-I-7444. The inside diameter of the sleeve shall be such
as to provide a close fit over the cable jacket. The required
designations shall be hot-stamped on the sleeve as indicated
in 3.2.3.2 prior to placing the sleeve over the cable. On
short cable (eg. feet or less), the identification sleeve may
extend the full length of the cable.
3.3 Marking with identification tapes. - Printed identifi-
cation tapes shall comply with the requirements of the appropriate
specification referenced on the product drawing. Tapes shall be
applied directly around the bundle of wires in the indicated
locations prior to inserting the bundle into the transparent in-
sulation sleeving. The tape shall be wrapped one or two turns
around one conductor then one and one-half to two turns around the
bundle of wires. The required designations shall be ink-stamped
or hot-stamped recurrently on the tape at essentially uniform
intervals so that the designation will appear at several places
around the cable. On small cables the minimum number of markings
visible on the installed tape shall be two, located diametrical-
ly opposite. The tape shall be wrapped without spiraling and
the designations shall be entirely legible through the sleeving.
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