MIL-DTL-24640C
The serial number is not necessarily a footage marker. A serial number shall not be repeated by a manufacture in
any one year for any one type and size of cable.
3.7.3.1 Marker threads. Marker threads may be used on cables as an alternative to a manufacturer's
identification tape, as specified in 3.7.3, for cables with a core diameter of less than 0.250 inch. Marker threads
shall be in accordance with those assigned by Underwriters Laboratory (UL) Incorporated to indicate the
manufacture of the cable. When UL marker threads are used, a yearly marker shall also be used to indicate the year
of manufacture in accordance with table VII.
TABLE VII. Yearly marker thread colors.
Year
Thread 1
Thread 2
2009
Red
Yellow
2010
Orange
Green
2011
Orange
Brown
2012
Orange
Black
2013
Orange
Yellow
2014
Blue
Green
2015
Blue
Brown
2016
Blue
Black
2017
Blue
Yellow
2018
White
Green
2019
White
Brown
2020
White
Black
2021
White
Yellow
2022
Red
Green
2023
Red
Brown
2024
Red
Black
2025
Red
Yellow
2026
Orange
Green
2027
Orange
Brown
2028
Orange
Black
3.7.4 Cable or surface marking. Unless otherwise specified (see 3.1), ink marking shall be used for overall
cable jacket surface marking. The legend shall be printed in contrasting color: white ink on black background, or
black ink on white background. The legend shall consist of the manufacturer's name, the cable type and size
designation, specification sheet number, the year of manufacture, and jacket type. The legend shall be repeated at
intervals not exceeding 1 foot from the ending of one legend to the beginning of the next legend. The year of
manufacture need not be in line with the balance of the legend.
The character type shall be block and shall have a minimum height in accordance with the diameter over which it is
applied in accordance with table VIII.
Jacket material name shall be abbreviated as follows: XLPOLYO
For example: "Manufacturer's name DX-3 M24640/1-01UN 2009 XLPOLYO"
or "Manufacturer's name DX-3 M24640/1-01UN XLPOLYO 2009"
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