MIL-SPEC AIRCRAFT CABLE | MIL-C-27500
The MIL-27500 covers the requirement for aerospace electrical use and other applications for which its performance characteristics are suitable. The cable constructions are defined by using a combination of letters and digits to describe the cable build-up.
Types
Unjacketed: 2 to 7 color coded wires, spirally laid without an overall outer jacket.
Jacketed: 2 to 7 color coded wires, spirally laid with an overall outer jacket.
Shielded: A single wire or 2 to 7 color coded wires spirally laid, with an overall jacket.
Shielded & Jacketed: A single wire or 2 to 7 color coded wires spirally laid, with overall shield(s) and jacket.
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Cable Designation Method:
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M27500
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-
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22
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VA
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3
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S
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6
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Cable Specification
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Identification
Method
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Wire Size
(one size
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Basic
Wire Spec
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No. of Wires
per cable
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Shield
Material
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Jacket
Material
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per cable)
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Example:
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M27500 -
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22
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VA
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3
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S
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6
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22 AWG
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MIL-W-22759/5
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Three conductors
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Silver-coated copper
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White TFE
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BASIC WIRES*
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Symbol
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Wire Specification
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Symbol
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Wire Specification
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A
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MIL-W-5086/1
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SP
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MIL-W-22759/43
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B
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MIL-W-5086/2
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SR
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MIL-W-22759/44
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C
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MIL-W-5086/3
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SS
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MIL-W-22759/45
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P
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MIL-W-5086/4
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ST
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MIL-W-22759/46
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AA
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MIL-W-5086/5
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WB
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MIL-W-22759/80
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AB
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MIL-W-5086/6
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WC
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MIL-W-22759/81
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AD
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MIL-W-5086/7
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WE
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MIL-W-22759/82
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H
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MIL-W-8777, MS25471
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WF
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MIL-W-22759/83
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F
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MIL-W-8777, MS27110
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WG
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MIL-W-22759/84
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EA
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MIL-W-22759/1
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WH
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MIL-W-22759/85
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E
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MIL-W-22759/2
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WJ
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MIL-W-22759/86
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RA
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MIL-W-22759/3
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WK
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MIL-W-22759/87
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RB
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MIL-W-22759/4
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WL
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MIL-W-22759/88
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VA
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MIL-W-22759/5
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WM
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MIL-W-22759/89
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WA
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MIL-W-22759/6
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WN
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MIL-W-22759/90
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SA
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MIL-W-22759/7
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WP
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MIL-W-22759/91
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TA
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MIL-W-22759/8
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WR
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MIL-W-22759/92
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LE
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MIL-W-22759/9
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JA
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MIL-W-25038/1
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LH
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MIL-W-22759/10
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JF
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MIL-W-25083/3
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RC
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MIL-W-22759/11
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MD
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MIL-W-81044/5
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RE
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MIL-W-22759/12
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ME
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MIL-W-81044/6
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CA
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MIL-W-22759/13
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MF
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MIL-W-81044/7
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CB
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MIL-W-22759/14
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MG
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MIL-W-81044/8
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CC
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MIL-W-22759/15
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MH
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MIL-W-81044/9
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TE
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MIL-W-22759/16
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MJ
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MIL-W-81044/10
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TF
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MIL-W-22759/17
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MK
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MIL-W-81044/11
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TG
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MIL-W-22759/18
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ML
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MIL-W-81044/12
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TH
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MIL-W-22759/19
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MM
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MIL-W-81044/13
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TK
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MIL-W-22759/20
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MR
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MIL-W-81381/7
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TL
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MIL-W-22759/21
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MS
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MIL-W-81381/8
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TM
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MIL-W-22759/22
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MT
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MIL-W-81381/9
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TN
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MIL-W-22759/23
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MV
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MIL-W-81381/10
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JB
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MIL-W-22759/28
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MW
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MIL-W-81381/11
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JC
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MIL-W-22759/29
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MY
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MIL-W-81381/12
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JD
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MIL-W-22759/30
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NA
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MIL-W-81381/13
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JE
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MIL-W-22759/31
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NB
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MIL-W-81381/14
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SB
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MIL-W-22759/32
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NE
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MIL-W-81381/17
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SC
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MIL-W-22759/33
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NF
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MIL-W-81381/18
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SD
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MIL-W-22759/34
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NG
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MIL-W-81381/19
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SE
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MIL-W-22759/35
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NH
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MIL-W-81381/20
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SM
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MIL-W-22759/41
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NK
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MIL-W-81381/21
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SN
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MIL-W-22759/42
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NL
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MIL-W-81381/22
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.
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SHIELD MATERIAL
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Symbol
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Shield
Material
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Recommended
Temperature
Limit
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Dual
Shield
Symbol
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U
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No shield
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T
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Tin-coated copper
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150°C (302°F)
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V
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S
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Silver-coated copper
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200°C (392°F)
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W
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N
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Nickel-coated copper
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260°C (500°F)
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Y
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F
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Stainless steel
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400°C (752°F)
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Z
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C
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Nickel-clad copper
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400°C (752°F)
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R
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M
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Silver-coated high-strength copper alloy
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200°C (392°F)
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K
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P
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Nickel-coated high-strength copper alloy
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260°C (500°F)
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L
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JACKET MATERIAL
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Single
Jacket
Symbol
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Jacket
Material
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Recommended
Temperature
Limit
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Double
Jacket
Symbol
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00
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No jacket
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00
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01
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Extruded white PVC
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90°C (194°F)
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51¹
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02
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Extruded clear polyamide in accordance with ASTM D4066
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105°C (221°F)
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52²
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03
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White polyamide braid impregnated with clear polyamide finisher over a polyester tape
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105°C (221°F)
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53
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04
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Polyester braid impregnated with high temperature finishers over polyester tape
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150°C (302°F)
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54
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05
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Extruded clear FEP
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200°C (392°F)
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55
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06
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Extruded or taped and heat-sealed white PTFE
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260°C (500°F)
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56
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07
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White PTFE-treated glass braid impregnated and coated w/PTFE finisher over presintered PTFE tape
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260°C (500°F)
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57
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08³
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Cross linked white extruded PVF₂ (Kynar®)
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150°C (302°F)
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58³
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09
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Extruded white FEP
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200°C (392°F)
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59
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10³
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Extruded clear PVF₂ (Kynar®)
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125°C (257°F)
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60³
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11⁴
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Tape of natural polyimide combined w/clear FEP wrapped and heat-sealed w/FEP outer surface
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200°C (392°F)
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61⁴
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12⁴
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Tape of natural polyimide combined w/FEP wrapped and heat-sealed w/polyimide outer surface
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200°C (392°F)
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62⁴
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14
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Extruded white ETFE
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150°C (302°F)
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64
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15
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Extruded clear ETFE
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150°C (302°F)
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65
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16
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Braid of aromatic polyamide with high temperature finisher over presintered PTFE tape
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200°C (392°F)
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66
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17⁵
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White extruded ECTFE
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150°C (302°F)
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67⁵
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18⁵
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Clear extruded ECTFE
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150°C (302°F)
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68⁵
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20
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Extruded white PFA
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260°C (500°F)
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70
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21
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Extruded clear PFA
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260°C (500°F)
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71
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22
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Tape of polyimide combined with clear FEP wrapped and heat-sealed with opaque polyimide outer surface
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200°C (392°F)
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72
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23
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White, cross linked, extruded, modified XLETFE
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200°C (392°F)
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73
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24
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Tape layer of white PTFE wrapped over a tape layer of natural polyimide combined with FEP and heat-sealed
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200°C (392°F)
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74
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¹Polyvinyl chloride materials shall not be used for aerospace applications.
²Jacket material 02 is not to be used for cables having a diameter of 0.251 inches (6.88mm) or greater.
³Jacket materials 08,58,10, and 60 are not to be used for cables having a diameter of 0.401 inches (10.19mm) or greater.
⁴Not for Naval Air Systems Command Usage
⁵Inactive for new design
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