Connectors – Mouser United Kingdom

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Backshells

Amphenol PCD Backshells offer strain relief, environmental protection, and 360° EMI/RFI shielding at the termination area of virtually any circular connector. These connectors feature a base material constructed of aluminum alloy, stainless steel, brass, or composite and a variety of finishes such as black zinc nickel, cadmium, electroless nickel, anodized black, passivated, and more. Amphenol PCD Backshells have custom designs available and meet or exceed RoHS/REACH compliance standards. Available in both military specifications and commercial types for any application, these backshells meet the Society of Automotive Engineers (SAE) AS85049 standard.

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Part #

Circular MIL Spec Backshells Straight Shell size 14 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/82-14ZP03
Amphenol PCD
1: £45.18
42In Stock

Mfr. Part No.
M85049/82-14ZP03

Mouser Part No
523-M85049/82-14ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 14 Black Zinc Nickel w/ Exposed Nickel Entry 3

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Datasheet

42In Stock

£45.18

£38.40

£35.99

£34.27

£32.63

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 90 Degrees Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/87-08ZP03
Amphenol PCD
1: £60.94
25In Stock

Mfr. Part No.
M85049/87-08ZP03

Mouser Part No
523-M85049/87-08ZP03

Amphenol PCD

Circular MIL Spec Backshells 90 Degrees Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry 3

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Datasheet

25In Stock

£60.94

£57.09

£50.47

£48.13

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 19 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/88-19ZP03
Amphenol PCD
1: £48.08
33In Stock

Mfr. Part No.
M85049/88-19ZP03

Mouser Part No
523-M85049/88-19ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 19 Black Zinc Nickel w/ Exposed Nickel Entry 3

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Datasheet

33In Stock

£48.08

£40.88

£38.32

£36.49

£34.92

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1811N02
Amphenol PCD
1: £38.61
396In Stock

Mfr. Part No.
M85049/1811N02

Mouser Part No
523-85049/1811N02

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

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Datasheet

396In Stock

£38.61

£35.86

£35.50

£34.61

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD SZ 11

M85049/79-11W03
Amphenol PCD
1: £60.00
261In Stock
100Expected 16/03/2026

Mfr. Part No.
M85049/79-11W03

Mouser Part No
523-85049/79-11W03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD SZ 11

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Datasheet

261In Stock

100Expected 16/03/2026

£60.00

£54.18

£46.43

£45.75

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 88 Backshell Band Lock

M85049/88-9W03
Amphenol PCD
1: £38.59
1,339In Stock
1,000Expected 06/04/2026

Mfr. Part No.
M85049/88-9W03

Mouser Part No
523-85049/88-9W03

Amphenol PCD

Circular MIL Spec Backshells 88 Backshell Band Lock

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Datasheet

1,339In Stock

1,000Expected 06/04/2026

£38.59

£32.53

£30.58

£25.60

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

M85049/82-10ZP03
Amphenol PCD
1: £42.55
9In Stock
25Expected 10/06/2026

Mfr. Part No.
M85049/82-10ZP03

Mouser Part No
523-M85049/82-10ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

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Datasheet

9In Stock

25Expected 10/06/2026

£42.55

£39.17

£33.54

£32.40

£31.45

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 14 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/82-14ZP02
Amphenol PCD
1: £45.18
7In Stock

Mfr. Part No.
M85049/82-14ZP02

Mouser Part No
523-M85049/82-14ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 14 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

7In Stock

£45.18

£38.40

£35.99

£34.27

£32.63

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/82-22ZP02
Amphenol PCD
1: £53.40
14In Stock

Mfr. Part No.
M85049/82-22ZP02

Mouser Part No
523-M85049/82-22ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 2

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Datasheet

14In Stock

£53.40

£46.95

£45.15

£43.64

£41.23

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/82-24ZP02
Amphenol PCD
1: £56.63
12In Stock

Mfr. Part No.
M85049/82-24ZP02

Mouser Part No
523-M85049/82-24ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 2

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Datasheet

12In Stock

£56.63

£50.34

£48.40

£46.79

£44.21

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 11 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/88-11ZP03
Amphenol PCD
1: £42.42
28In Stock

Mfr. Part No.
M85049/88-11ZP03

Mouser Part No
523-M85049/88-11ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 11 Black Zinc Nickel w/ Exposed Nickel Entry 3

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Datasheet

28In Stock

£42.42

£36.06

£35.48

£32.19

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 17 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-17ZP02
Amphenol PCD
1: £46.61
7In Stock
25Expected 16/03/2026

Mfr. Part No.
M85049/88-17ZP02

Mouser Part No
523-M85049/88-17ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 17 Black Zinc Nickel w/ Exposed Nickel Entry 2

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Datasheet

7In Stock

25Expected 16/03/2026

£46.61

£39.62

£37.14

£35.37

£33.74

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 21 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/88-21ZP03
Amphenol PCD
1: £49.63
16In Stock

Mfr. Part No.
M85049/88-21ZP03

Mouser Part No
523-M85049/88-21ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 21 Black Zinc Nickel w/ Exposed Nickel Entry 3

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Datasheet

16In Stock

£49.63

£42.18

£39.55

£37.65

£36.15

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 23 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-23ZP02
Amphenol PCD
1: £52.90
9In Stock

Mfr. Part No.
M85049/88-23ZP02

Mouser Part No
523-M85049/88-23ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 23 Black Zinc Nickel w/ Exposed Nickel Entry 2

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Datasheet

9In Stock

£52.90

£44.96

£42.14

£40.13

£38.74

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 23 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/88-23ZP03
Amphenol PCD
1: £53.40
16In Stock

Mfr. Part No.
M85049/88-23ZP03

Mouser Part No
523-M85049/88-23ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 23 Black Zinc Nickel w/ Exposed Nickel Entry 3

Learn More

Datasheet

16In Stock

£53.40

£46.95

£45.15

£43.64

£41.23

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 9 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/88-9ZP03
Amphenol PCD
1: £41.11
22In Stock

Mfr. Part No.
M85049/88-9ZP03

Mouser Part No
523-M85049/88-9ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 9 Black Zinc Nickel w/ Exposed Nickel Entry 3

Learn More

Datasheet

22In Stock

£41.11

£34.95

£32.36

£31.19

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 12

M85049/10-13N
Amphenol PCD
1: £58.62
40In Stock

Mfr. Part No.
M85049/10-13N

Mouser Part No
523-85049/10-13N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 12

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Datasheet

40In Stock

£58.62

£54.75

£46.58

£45.64

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-11N
Amphenol PCD
1: £63.48
21In Stock

Mfr. Part No.
M85049/11-11N

Mouser Part No
523-85049/11-11N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

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Datasheet

21In Stock

£63.48

£58.39

£49.63

£48.99

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1811N03
Amphenol PCD
1: £34.82
325In Stock

Mfr. Part No.
M85049/1811N03

Mouser Part No
523-85049/1811N03

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Learn More

Datasheet

325In Stock

£34.82

£30.95

£29.90

£28.98

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 13

M85049/1813N03
Amphenol PCD
1: £45.19
248In Stock

Mfr. Part No.
M85049/1813N03

Mouser Part No
523-85049/1813N03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 13

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Datasheet

248In Stock

£45.19

£42.95

£38.51

£36.55

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 13

M85049/1813N04
Amphenol PCD
1: £41.28
70In Stock
100Expected 11/05/2026

Mfr. Part No.
M85049/1813N04

Mouser Part No
523-85049/1813N04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 13

Learn More

Datasheet

70In Stock

100Expected 11/05/2026

£41.28

£37.81

£37.43

£37.05

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 15

M85049/1815N05
Amphenol PCD
1: £48.68
155In Stock

Mfr. Part No.
M85049/1815N05

Mouser Part No
523-85049/1815N05

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 15

Learn More

Datasheet

155In Stock

£48.68

£44.65

£36.74

£35.52

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 17

M85049/1817N04
Amphenol PCD
1: £57.73
178In Stock

Mfr. Part No.
M85049/1817N04

Mouser Part No
523-85049/1817N04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 17

Learn More

Datasheet

178In Stock

£57.73

£52.78

£44.85

£40.57

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1819N05
Amphenol PCD
1: £52.21
37In Stock
50Expected 11/03/2026

Mfr. Part No.
M85049/1819N05

Mouser Part No
523-85049/1819N05

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Learn More

Datasheet

37In Stock

50Expected 11/03/2026

£52.21

£49.53

£43.56

£41.23

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1821N05
Amphenol PCD
1: £50.35
67In Stock

Mfr. Part No.
M85049/1821N05

Mouser Part No
523-85049/1821N05

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Learn More

Datasheet

67In Stock

£50.35

£44.78

£41.46

£39.95

£39.35

Min.: 1
Mult.: 1

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