MIL-DTL-55021/2D
TABLE I. Conductor stranding.
Nominal
Nominal diameter
Maximum conductor dc
Number
AWG
o
stranding
over conductor
resistance at 20 C per 1000
of
size
strands
(inch)
(inch)
ft. (ohms)
32
7
.0031
.010
173.0
30
7
.0040
.012
100.7
28
7
.0050
.015
63.8
26
7
.0063
.019
40.5
24
19
.0050
.024
24.3
22
19
.0063
.030
15.1
20
19
.0080
.038
9.19
18
19
.0100
.048
5.79
16
19
.0113
.057
4.52
14
19
.0142
.071
2.88
12
19
.0179
.090
1.81
10
37
.0159
.119
1.19
8
133
.0113
.166
.658
6
133
.0142
.208
.418
Jacket materials: If jacketing is required by the contract or order (see MIL-DTL-55021), the cable jacket shall be
extruded or tape-wrapped polytetrafluoroethylene (PTFE), or fluorinated ethylene propylene (FEP), of uniform
thickness as specified in table II. If the jacket is tape, two layers of tape shall be applied in opposite directions, each
layer and adjacent convolutions being properly sealed together to form a homogeneous wall. The surface of the
jacket shall be smooth, although a slight spiral ridge of the tape shall not be cause for rejection. Pre-fused tape shall
not be used.
TABLE II. Jacket thickness.
Cable diameter
Nominal jacket thickness
Minimum jacket thickness
1/
(under jacket)
(inch)
(inch)
(inch)
Under .300
.012
.008
.300 and over
.016
.012
1/ When specifying a jacket thickness, both unshielded and shielded constructions are applicable.
o
Heat resistance: The cable shall be conditioned at 250±5 C for 96+1, -0 hours.
Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the
previous issues due to the extensiveness of the changes.
Referenced documents. In addition to MIL-DTL-55021, this document references the following:
NEMA HP3
CONCLUDING MATERIAL
Custodians:
Preparing activity:
Army - MI
DLA - CC
Navy - AS
Air Force - 85
(Project 6145-2011-013)
DLA - CC
Review activity:
Army CR
Note: The activities listed above were interested in this document as of the date of this document. Since
organizations and responsibilities can change, you should verify the currency of the information using the Assist
Online database at https://assist.daps.dla.mil.
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