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This specification covers the requirements for electronic control cables used in aircraft and missile applications. These cables may be constructed from a variety of insulating materials with different characteristics. They can be obtained in configurations up to 15 conductors with just a shield, just a jacket, or both single and double shields and jackets. Conductor colors are specified and the cable must be identified by methods described in the body of M27500.
Cable Designation
Part Number StructureM27500 - 22 SD 3 T 23
M27500
Specification Number
—
ID Method of Cable Wire & Shield Coverage
22
Conductor Size (AWG)
SD
Basic Wire Specification
3
Number of Wires in Cable
T
Shield Style & Material
23
Jacket Material
Table A — Color Coding
Wire Colors 1–15- For preferred method color coding, colors are stripes on white insulation (wire #1 has no stripe). Wires 11–15 have double stripes as indicated.
- For optional method color coding, colors are solid insulation color. Wires 11–15 have a stripe in lighter shade of base color.
| Wire Number | Color | Wire Number | Color | Wire Number | Color |
|---|---|---|---|---|---|
| 1 | White | 6 | Black | 11 | Blue / Blue |
| 2 | Blue | 7 | Yellow | 12 | Orange / Orange |
| 3 | Orange | 8 | Violet | 13 | Green / Green |
| 4 | Green | 9 | Gray | 14 | Red / Red |
| 5 | Red | 10 | Brown | 15 | Black / Black |
Table B — Color Coding
Wire Colors 1–15- For preferred method color coding, colors are stripes on white insulation (wire #5 has no stripe), for wires 1–10. For wires 11–15 color pairs indicate insulation of the first color, with a stripe of the second color.
- For optional method color coding, colors are solid insulation color for wires 1–10. For wires 11–15, color pairs indicate insulation of the first color, with a stripe of the second color.
- For either method, the color of the wire in one conductor is white.
| Wire Number | Color | Wire Number | Color | Wire Number | Color |
|---|---|---|---|---|---|
| 1 | Red | 6 | Black | 11 | Red / White |
| 2 | Blue | 7 | Brown | 12 | Blue / White |
| 3 | Yellow | 8 | Orange | 13 | Yellow / White |
| 4 | Green | 9 | Violet | 14 | Green / White |
| 5 | White | 10 | Gray | 15 | Black / White |
Table C — Color Coding
AWG-Based Colors- For optional method B color coding, wire insulation color is based on AWG size, with color bands per Table D to indicate wire number (circuit ID).
- For optional method C color coding, wire insulation color is based on AWG size, with numbers printed on each wire to indicate wire number (circuit ID).
| AWG Size | Color | AWG Size | Color | AWG Size | Color | AWG Size | Color |
|---|---|---|---|---|---|---|---|
| 26 | Black | 18 | White | 10 | Brown | 2 | Red |
| 24 | Blue | 16 | Blue | 8 | Red | 1 | White |
| 22 | Green | 14 | Green | 6 | Blue | 1/0 | Blue |
| 20 | Red | 12 | Yellow | 4 | Yellow | 2/0 | Green |
Table D — Color Coding
Band Configuration
For optional method B color coding, band groups are printed on wires to indicate wire number (circuit ID).
| Band Configuration | Wire Number | Band Configuration | Wire Number | Band Configuration | Wire Number |
|---|---|---|---|---|---|
| None | 1 | 6 Narrow | 6 | 1 Wide, 4 Narrow | 11 |
| 2 Narrow | 2 | 7 Narrow | 7 | 1 Wide, 5 Narrow | 12 |
| 3 Narrow | 3 | 1 Wide, 1 Narrow | 8 | 2 Wide, 1 Narrow | 13 |
| 4 Narrow | 4 | 1 Wide, 2 Narrow | 9 | 2 Wide, 2 Narrow | 14 |
| 5 Narrow | 5 | 1 Wide, 3 Narrow | 10 | 2 Wide, 3 Narrow | 15 |
Identification Method
Wire ID Codes| 85% Shield Coverage | 90% Shield Coverage | M27500 Terminology | Component Wire Identification Method |
|---|---|---|---|
| — | C | Preferred method, Table A | White wires with colored stripes — stripe color per Table A |
| F | G | Preferred method, Table B | White wires with colored stripes — stripe color per Table B |
| A | D | Optional method A, Table A | Solid colored wire — colors per Table A |
| G | J | Optional method A, Table B | Solid colored wire — colors per Table B |
| B | E | Optional method B, Table C | Wires are the same color based on AWG size (per Table C). Bands of contrasting color denote wire number (per Table D) |
| K | M | Optional method C, Table C | Wires are the same color based on AWG size (per Table C). Numbers of contrasting color printed to denote wire number |
| L | N | Optional method B, Table D | White wires with numbers of contrasting color printed on each wire to denote wire number |
Basic Wire Specification
Symbol Reference| Symbol | Specification | Symbol | Specification | Symbol | Specification | ||
|---|---|---|---|---|---|---|---|
| CA | AS22759/13 | ML | AS81044/12 | ST | AS22759/46 | ||
| CB | AS22759/14 | MM | AS81044/13 | SV | AS22759/47 | ||
| CC | AS22759/15 | MR | MIL-DTL-81381/7 | SW | AS22759/48 | ||
| DB* | AS22759/180 | MS | MIL-DTL-81381/8 | SX | AS22759/49 | ||
| DC* | AS22759/181 | MT | MIL-DTL-81381/9 | SY | AS22759/50 | ||
| DE* | AS22759/182 | MV | MIL-DTL-81381/10 | TA | AS22759/8 | ||
| DF* | AS22759/183 | MW | MIL-DTL-81381/11 | TE | AS22759/16 | ||
| DG* | AS22759/184 | MY | MIL-DTL-81381/12 | TF | AS22759/17 | ||
| DH* | AS22759/185 | NA | MIL-DTL-81381/13 | TG | AS22759/18 | ||
| DJ* | AS22759/186 | NB | MIL-DTL-81381/14 | TH | AS22759/19 | ||
| DK* | AS22759/187 | NE | MIL-DTL-81381/17 | TK | AS22759/20 | ||
| DL* | AS22759/188 | NF | MIL-DTL-81381/18 | TL | AS22759/21 | ||
| DM* | AS22759/188 | NG | MIL-DTL-81381/19 | TM | AS22759/22 | ||
| DN* | AS22759/190 | NH | MIL-DTL-81381/20 | TN | AS22759/23 | ||
| DP* | AS22759/191 | NK | MIL-DTL-81381/21 | VA | AS22759/5 | ||
| DR* | AS22759/192 | NL | MIL-DTL-81381/22 | WA | AS22759/6 | ||
| E | AS22759/2 | RA | AS22759/3 | WB | AS22759/80 | ||
| EA | AS22759/1 | RB | AS22759/4 | WC | AS22759/81 | ||
| JA | MIL-DTL-81381/1 | RC | AS22759/11 | WE | AS22759/82 | ||
| JB | AS22759/28 | RE | AS22759/12 | WF | AS22759/83 | ||
| JC | AS22759/29 | SA | AS22759/7 | WG | AS22759/84 | ||
| JD | AS22759/30 | SB | AS22759/32 | WH | AS22759/85 | ||
| JE | AS22759/31 | SC | AS22759/33 | WJ | AS22759/86 | ||
| JF | AS25038/3 | SD | AS22759/34 | WK | AS22759/87 | ||
| LE | AS22759/9 | SE | AS22759/35 | WL | AS22759/88 | ||
| LH | AS22759/10 | SM | AS22759/41 | WM | AS22759/89 | ||
| ME | AS81044/6 | SN | AS22759/42 | WN | AS22759/90 | ||
| MF | AS81044/7 | SP | AS22759/43 | WP | AS22759/91 | ||
| MH | AS81044/9 | SR | AS22759/44 | WR | AS22759/92 | ||
| MJ | AS81044/10 | SS | AS22759/45 |
* Proposed for WC27500-2011 revision
Shield Style and Material
Shield Codes| Single Shield Style | Double Shield Style | Shield Material | Max. Temp. Limit |
|---|---|---|---|
| U | — | No Shield | — |
| T | V | Tin-coated copper, round | 150°C |
| S | W | Silver-coated copper, round | 200°C |
| N | Y | Nickel-coated copper, round | 260°C |
| F | Z | Stainless Steel, round | 400°C |
| C | R | Nickel-coated copper 27%, round | 400°C |
| M | K | Silver-coated high strength copper alloy, round | 200°C |
| P | L | Nickel-coated high strength copper alloy, round | 260°C |
| G | A | Silver-coated copper, flat | 200°C |
| H | B | Silver-coated high strength copper alloy, flat | 200°C |
| * | # | Nickel-coated copper, flat | 260°C |
| J | D | Tin-coated copper, flat | 150°C |
| E | X | Nickel-coated high strength copper alloy, flat | 260°C |
| I | Q | Nickel-Chromium alloy flat | 400°C |
Jacket Style and Material
Jacket Codes| Single Jacket Style | Double Jacket Style | Jacket Material | Temp. Limit |
|---|---|---|---|
| 00 | 00 | No jacket | — |
| 01 | 51 | Extruded white polyvinyl chloride (PVC) | 90°C |
| 02 | 52 | Extruded clear polyamide | 105°C |
| 03 | 53 | White polyamide braid impregnated with clear polyamide finisher over a polyester tape | 105°C |
| 04 | 54 | Polyester braid impregnated with high temperature finisher over polyester tape | 150°C |
| 05 | 55 | Extruded clear fluorinated ethylene propylene (FEP) | 200°C |
| 06 | 56 | Extruded or taped and heat sealed white polytetrafluoroethylene (PTFE) | 260°C |
| 07 | 57 | White PTFE treated glass braid impregnated and coated with PTFE finisher over pre-inserted PTFE tape | 260°C |
| 08 | 58 | Cross-linked white extruded polyvinylidene fluoride (PVDF) | 150°C |
| 09 | 59 | Extruded white fluorinated ethylene propylene (FEP) | 200°C |
| 10 | 60 | Extruded clear polyvinylidene fluoride (PVDF) | 125°C |
| 11 | 61 | Tape or natural polyimide combined with clear FEP wrapped and heat sealed with polyimide outer surface | 200°C |
| 12 | 62 | Tape or natural polyimide combined with FEP wrapped and heat sealed with polyimide outer surface | 200°C |
| 14 | 64 | Extruded white ethylene-tetrafluoroethylene co-polymer (ETFE) | 150°C |
| 15 | 65 | Extruded clear ethylene-tetrafluoroethylene co-polymer (ETFE) | 150°C |
| 16 | 66 | Braid of aromatic polyamide with high temperature finisher over pre-inserted PTFE tape | 200°C |
| 17 | 67 | White extruded ethylene chlorotrifluoro-ethylene (ECTFE) | 150°C |
| 18 | 68 | Clear extruded ethylene chlorotrifluoro-ethylene (ECTFE) | 150°C |
| 20 | 70 | Extruded white perfluoroalkoxy (PFA) | 260°C |
| 21 | 71 | Extruded clear perfluoroalkoxy (PFA) | 260°C |
| 22 | 72 | Taped polyimide combined with clear FEP wrapped and heat sealed with opaque polyimide outer surface | 200°C |
| 23 | 73 | White cross-linked, extruded, modified, ethylene tetrafluoroethylene copolymer (XLETFE) | 200°C |
| 24 | 74 | Taped layer of white PTFE wrapped over a tape layer of natural polyimide combined with fluoropolymer heated and fused | 200°C |
| 25 | 75 | Smooth surface tape layer of white PTFE wrapped over a tape layer of natural polyimide combined with fluoropolymer heated and fused | 260°C |
| 26 | 76 | Extruded, white, low fluoride, cross-linked modified, ethylene-tetrafluoroethylene co-polymer (XLETFE) | 200°C |
Cable by AWG Size
Dedicated Catalogs
8 AWG Cable
3 cataloged M27500 part numbers
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10 AWG Cable
10 cataloged M27500 part numbers
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12 AWG Cable
53 cataloged M27500 part numbers
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14 AWG Cable
16 cataloged M27500 part numbers
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16 AWG Cable
68 cataloged M27500 part numbers
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18 AWG Cable
23 cataloged M27500 part numbers
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20 AWG Cable
113 cataloged M27500 part numbers
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22 AWG Cable
212 cataloged M27500 part numbers
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24 AWG Cable
84 cataloged M27500 part numbers
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26 AWG Cable
52 cataloged M27500 part numbers
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28 AWG Cable
15 cataloged M27500 part numbers
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30 AWG Cable
2 cataloged M27500 part numbers
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