NEMA WC 27500 / M27500
General Description
This standard contains requirements for finished cables. The component wires are covered by other referenced
standards. These cables are intended for signal and low-voltage power applications with defined environment or
temperature conditions found in commercial aircraft, military aircraft, and high performance vehicles.
Part Number Designation
M27500
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-
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22
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SD
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3
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T
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23
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Identification number
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Identification method of cable wire and
shield coverage
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Conductor size
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Basic wire specification
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Number of wires in cable
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Shield style and material
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Jacket material
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Base Wire Specification for M27500
Symbol
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Specification
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Symbol
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Specification
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A
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MIL-W-5086/1
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NK
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MIL-W-81381/21
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AA
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MIL-W-5086/5
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NL
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MIL-W-81381/22
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AB
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MIL-W-5086/6
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P
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MIL-W-5086/4
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AD
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MIL-W-5086/7
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RA
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MIL-W-22759/3
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B
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MIL-W-5086/2
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RB
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MIL-W-22759/4
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C
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MIL-W-5086/3
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RC
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MIL-W-22759/11
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CA
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MIL-W-22759/13
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RE
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MIL-W-22759/12
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CB
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MIL-W-22759/14
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SA
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MIL-W-22759/7
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CC
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MIL-W-22759/15
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SB
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MIL-W-22759/32
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E
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MIL-W-22759/2
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SC
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MIL-W-22759/33
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EA
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MIL-W-22759/1
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SD
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MIL-W-22759/34
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F
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MIL-W-8777,MS27110
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SE
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MIL-W-22759/35
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H
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MIL-W-8777,MS25471
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SM
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MIL-W-22759/41
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JA
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MIL-W-25038/1
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SN
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MIL-W-22759/42
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JB
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MIL-W-22759/28
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SP
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MIL-W-22759/43
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JC
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MIL-W-22759/29
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SR
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MIL-W-22759/44
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JD
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MIL-W-22759/30
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SS
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MIL-W-22759/45
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JE
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MIL-W-22759/31
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ST
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MIL-W-22759/46
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JF
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MIL-W-25038/3
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TA
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MIL-W-22759/8
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LE
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MIL-W-22759/9
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TE
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MIL-W-22759/16
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LH
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MIL-W-22759/10
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TF
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MIL-W-22759/17
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MD
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MIL-W-81044/5
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TG
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MIL-W-22759/18
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ME
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MIL-W-81044/6
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TH
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MIL-W-22759/19
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MF
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MIL-W-81044/7
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TK
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MIL-W-22759/20
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MG
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MIL-W-81044/8
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TL
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MIL-W-22759/21
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MH
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MIL-W-81044/9
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TM
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MIL-W-22759/22
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MJ
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MIL-W-81044/10
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TN
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MIL-W-22759/23
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MK
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MIL-W-81044/11
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VA
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MIL-W-22759/5
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ML
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MIL-W-81044/12
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WA
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MIL-W-22759/6
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MM
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MIL-W-81044/13
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WB
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MIL-W-22759/80
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MR
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MIL-W-81381/7
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WC
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MIL-W-22759/81
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MS
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MIL-W-81381/8
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WE
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MIL-W-22759/82
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MT
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MIL-W-81381/9
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WF
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MIL-W-22759/83
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MV
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MIL-W-81381/10
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WG
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MIL-W-22759/84
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MW
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MIL-W-81381/11
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WH
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MIL-W-22759/85
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MY
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MIL-W-81381/12
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WJ
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MIL-W-22759/86
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NA
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MIL-W-81381/13
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WK
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MIL-W-22759/87
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NB
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MIL-W-81381/14
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WL
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MIL-W-22759/88
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NE
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MIL-W-81381/17
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WM
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MIL-W-22759/89
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NF
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MIL-W-81381/18
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WN
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MIL-W-22759/90
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NG
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MIL-W-81381/19
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WP
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MIL-W-22759/91
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NH
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MIL-W-81381/20
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WR
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MIL-W-22759/92
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Shield Material for M27500
Single Shield Symbol
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Double Shield Symbol
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Shield Material
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Maximum Shield
Temperature
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U
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---
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No Shield
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---
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T
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V
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Tin-coated copper, round
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150°c
(302°f)
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S
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W
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Silver-coated copper,
round
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200°c
(392°f)
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N
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Y
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Nickel-coated copper,
round
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260°c
(500°f)
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F
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Z
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Stainless Steel, round
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400°c
(752°f)
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C
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R
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Nickel-clad copper,
round
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400°c
(752°f)
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M
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K
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Silver-coated high strength copper alloy,
round
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200°c
(392°f)
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P
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L
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Nickel-coated high strength copper alloy,
round
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260°c
(500°f)
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G
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A
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Silver-coated copper,
flat
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200°c
(392°f)
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H
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B
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Silver-coated high strength copper alloy,
flat
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200°c
(392°f)
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*
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#
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Nickel-coated copper,
flat
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260°c
(500°f)
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J
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D
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Tin-coated Copper, flat
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150°c
(302°f)
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E
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X
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Nickel-coated high strength copper alloy,
flat
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260°c
(500°f)
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I
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Q
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Nickel-chromium alloy,
flat
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400°c
(752°f)
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Jacket Material and Color for M27500
Single Jacket Symbol
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Double Jacket Symbol
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Jacket Material
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Maximum temperature
rating
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00
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00
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No Jacket
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---
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01
|
51
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Extruded white polyvinyl chloride
(PVC)
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90°c
(194°f)
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02
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52
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Extruded clear polyamide
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105°c
(221°f)
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03
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53
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White polyamide braid impregnated with
clear polyamide finisher over polyester tape
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105°c
(221°f)
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04
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54
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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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05
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55
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Extruded clear fluorinated ethylene
propylene (FEP)
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200°c
(392°f)
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06
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56
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Extruded or taped and heat sealed white
polytetraflouroethylene (PTFE)
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260°c
(500°f)
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07
|
57
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White polytetraflouroethylene (PTFE)
treated glass braid impregnated and coated with polytetraflouroethylene finisher over
presintered polytetraflouroethylene tape
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260°c
(500°f)
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08
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58
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Cross linked white extruded polyvinylidene
fluoride (PFV)
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150°c
(302°f)
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09
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59
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Extruded white fluorinated ethylene
propylene (FEP)
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200°c
(392°f)
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10
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60
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Extruded clear polyvinylidene fluoride
(PFV)
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125°c
(257°f)
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11
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61
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Tape of natural polymide combined with
clear fluorinated ethylene propylene (FEP) wrapped and heat sealed with (FEP) outer
surface
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200°c
(392°f)
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12
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62
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Tape of natural polyimide combined with
fluorinated ethylene propylene (FEP) wrapped and heat sealed with polyimide outer
surface
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200°c
(392°f)
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14
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64
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Extruded white
ethylene-tetraflouroethylene copolymer (ETFE)
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150°c
(302°f)
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15
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65
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Extruded clear
ethylene-tetraflouroethylene copolymer (ETFE)
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150°c
(302°f)
|
16
|
66
|
Braid of aromatic polyamide with high
temperature finisher over presinterd polytetraflouroethylene (PTFE) tape
|
200°c
(392°f)
|
17
|
67
|
White extruded ethylene
chlorotriflouro-ethylene (ECTFE)
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150°c
(302°f)
|
18
|
68
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Clear extruded ethylene
chlorotriflouro-ethylene (ECTFE)
|
150°c
(302°f)
|
20
|
70
|
Extruded White perflouroalkoxy
(PFA)
|
260°c
(500°f)
|
21
|
71
|
Extruded Clear perflouroalkoxy
(PFA)
|
260°c
(500°f)
|
22
|
72
|
Tape of polyimide combined with clear
fluorinated ethylene propylene (FEP) wrapped and heat sealed with opaque polyimide outer
surface
|
200°c
(392°f)
|
23
|
73
|
White, crosslinked, extruded, modified,
ethylene-tetraflouroethylene copolymer (XLETFE)
|
200°c
(392°f)
|
24
|
74
|
Tape layer of white
polytetraflouroethylene (PTFE) wrapped over a tape layer of natural polyimide combined with FEP
heated and fused
|
260°c
(500°f)
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Referenced Standards for M27500
Standard
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Description
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ANSI/ASQC Z 1.4
|
Sampling Procedured and Tables for
Inspection by Attributes
|
ASTM A 313/A313M-98
|
Standard Specification for Stainless Steel
Spring Wire
|
ASTM B 3-95
|
Soft or Annealed Copper
Wire
|
ASTM B 33-94
|
Standard Specification for Tinned Soft or
Annealed Copper Wire for Electrical Purposes
|
ASTM B 272-96
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Copper Flat Copper Products with Finished
(Rolled or Drawn) Edges (Flat Wire and Strip)
|
ASTM B 298-99
|
Silver Coated Soft or Annealed Copper
Wire
|
ASTM B 335-95
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Nickel-Coated Soft or Annealed Copper
Wire
|
ASTM B 624-99
|
High Strength, High-conductivity Copper
Alloy Wire for Electronic Application, Standard, Specification for
|
ASTM D 3032-98
|
Hookup Wire Insulation, Standard Methods
of Testing
|
ASTM D 4066-99
|
Polyamide Injection and Extrusion
Materials (PA) Nylon Injection and Extrusion Materials (PA)
|
ASTM F 777-98e1
|
Standard Test Method for Resistance of
Electrical Wire Insulation Materials to Flame at 60 Degrees
|
NEMA WC 65-1995
|
A Reasoned Approach to Solving
Solderability Problems with Tin-Coated and Nickel-Coated Stranded Conductors in High Performance
Wire and Cable Applications
|
NEMA WC 67-1997
|
Standard for Uninsulated Conductors Used
in Electrical and Electronic Applications
|
NEMA WC 71-1999
|
Continuity of Coating Testing for
Electrical Conductors
|
QQ-W-423
|
Wire, Steel,
Corrosion-Resisting
|
H4-1
|
Federal Supply Code For Manufactures,
United States and Canada, Name to Code
|
H4-2
|
Federal Supply Code For Manufactures,
United States and Canada. Code to Name
|
MIL-W-5086
|
Wire, Polyvinyl Chloride Insulated, Copper
or Copper Alloy
|
MIL-W-8777
|
Wire, Electrical, Silicone-Insulated, Copper, 600 Volt, 200°c
|
MIL-C-12000
|
Cable, Cord, and Wire, Electric; Packaging
of
|
MIL-W-22759
|
Wire, Electric, Flouropolymer-insulated,
Copper Or Copper Alloy.
|
MIL-W-25038
|
Wire, Electrical, High Temperature and
Fire Resistant, General Specification for
|
MIL-W-81044
|
Wire, Electric, Crosslinked Polyalkene,
Crosslinked Alkaneimide Polymer, or Polyarylene Insulated Copper or Copper
Alloy
|
MIL-DTL-81381
|
Wire, Electric, Polyimide-insulated,
Copper or Copper Alloy
|
MIL-STD-104
|
Limits for Electrical Insulated
Color
|
MIL-STD-202
|
Test Methods Standard for Electronic and
Electrical Component Parts
|
MIL-STD-681
|
Identification Coding and Application of
Hookup and lead Wire
|
MIL-STD-686
|
Cable and Cord, Electrical; Identification
Marking and Color Coding of
|
MIL-STD-2223
|
Test Methods for Insulated Electric
Wire
|
MS25471
|
Wire, Electrical-Silicone, Copper, 600
Volt, 200 Deg. C, Polyester Jacket
|
MS27110
|
Wire, Electrical-Silicone, Copper, 600
Volt, 200 Deg. C, FEP Jacket (ASG)
|
NBS HDBK 100
|
International Annealed Copper Standard
(IACS)
|
SAE AS50881A
|
Wiring, Aerospace
Vehicle
|
|