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 9 Backshell Env

M85049/9-11W
Amphenol PCD
1: £38.80
27In Stock

Mfr. Part No.
M85049/9-11W

Mouser Part No
523-85049/9-11W

Amphenol PCD

Circular MIL Spec Backshells 9 Backshell Env

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Datasheet

27In Stock

£38.80

£35.01

£30.35

£28.57

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-13W
Amphenol PCD
1: £35.89
5In Stock

Mfr. Part No.
M85049/9-13W

Mouser Part No
523-85049/9-13W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

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Datasheet

5In Stock

£35.89

£32.38

£32.00

£31.83

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-14W
Amphenol PCD
1: £35.84
5In Stock

Mfr. Part No.
M85049/9-14W

Mouser Part No
523-85049/9-14W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

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Datasheet

5In Stock

£35.84

£31.70

£29.20

£28.09

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-15W
Amphenol PCD
1: £44.26
7In Stock
25Expected 15/04/2026

Mfr. Part No.
M85049/9-15W

Mouser Part No
523-85049/9-15W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

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Datasheet

7In Stock

25Expected 15/04/2026

£44.26

£40.87

£31.03

£28.93

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-16W
Amphenol PCD
1: £40.89
19In Stock

Mfr. Part No.
M85049/9-16W

Mouser Part No
523-85049/9-16W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

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Datasheet

19In Stock

£40.89

£36.39

£33.15

£31.45

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 9 Backshell Env

M85049/9-19W
Amphenol PCD
1: £35.08
1In Stock

Mfr. Part No.
M85049/9-19W

Mouser Part No
523-85049/9-19W

Amphenol PCD

Circular MIL Spec Backshells 9 Backshell Env

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Datasheet

1In Stock

£35.08

£34.50

£34.49

£34.40

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-21W
Amphenol PCD
1: £53.60
15In Stock

Mfr. Part No.
M85049/9-21W

Mouser Part No
523-85049/9-21W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

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Datasheet

15In Stock

£53.60

£47.66

£47.60

£46.44

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 9 Backshell Env

M85049/9-40W
Amphenol PCD
1: £28.49
11In Stock

Mfr. Part No.
M85049/9-40W

Mouser Part No
523-85049/9-40W

Amphenol PCD

Circular MIL Spec Backshells 9 Backshell Env

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Datasheet

11In Stock

£28.49

£26.61

£24.80

£24.18

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-4W
Amphenol PCD
1: £31.90
4In Stock
25Expected 02/03/2026

Mfr. Part No.
M85049/9-4W

Mouser Part No
523-85049/9-4W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

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Datasheet

4In Stock

25Expected 02/03/2026

£31.90

£28.96

£25.17

£24.81

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-57W
Amphenol PCD
1: £31.35
4In Stock

Mfr. Part No.
M85049/9-57W

Mouser Part No
523-85049/9-57W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

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Datasheet

4In Stock

£31.35

£31.24

£31.18

£30.73

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-5W
Amphenol PCD
1: £29.26
22In Stock

Mfr. Part No.
M85049/9-5W

Mouser Part No
523-85049/9-5W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

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Datasheet

22In Stock

£29.26

£26.84

£24.38

£24.37

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-61W
Amphenol PCD
1: £53.60
12In Stock

Mfr. Part No.
M85049/9-61W

Mouser Part No
523-85049/9-61W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

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Datasheet

12In Stock

£53.60

£48.87

£44.11

£41.83

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-6W
Amphenol PCD
1: £32.89
18In Stock

Mfr. Part No.
M85049/9-6W

Mouser Part No
523-85049/9-6W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

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Datasheet

18In Stock

£32.89

£29.44

£29.43

£28.73

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 13

M85049/90-13W03
Amphenol PCD
1: £50.30
14In Stock
200On Order

Mfr. Part No.
M85049/90-13W03

Mouser Part No
523-85049/90-13W03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 13

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Datasheet

14In Stock

200On Order

£50.30

£44.79

£43.51

£42.95

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 90 Backshell Band Lock

M85049/90-15W02
Amphenol PCD
1: £51.66
13In Stock

Mfr. Part No.
M85049/90-15W02

Mouser Part No
523-85049/90-15W02

Amphenol PCD

Circular MIL Spec Backshells 90 Backshell Band Lock

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Datasheet

13In Stock

£51.66

£48.13

£44.97

£43.27

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 15

M85049/90-15W03
Amphenol PCD
1: £45.34
24In Stock
100Expected 23/04/2026

Mfr. Part No.
M85049/90-15W03

Mouser Part No
523-85049/90-15W03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 15

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Datasheet

24In Stock

100Expected 23/04/2026

£45.34

£40.51

£38.43

£37.00

£36.08

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 25

M85049/90-25W03
Amphenol PCD
1: £70.97
11In Stock
100On Order

Mfr. Part No.
M85049/90-25W03

Mouser Part No
523-85049/90-25W03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 25

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Datasheet

11In Stock

100On Order

£70.97

£67.73

£58.90

£56.09

£55.88

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BShell SRStrt SL ODC SZ08

M85049/121S08W
Amphenol PCD
1: £36.33
14In Stock

Mfr. Part No.
M85049/121S08W

Mouser Part No
523-85049121S08W

Amphenol PCD

Circular MIL Spec Backshells BShell SRStrt SL ODC SZ08

Datasheet

14In Stock

£36.33

£33.09

£28.12

£27.91

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 124 Backshell Strain Relief Clamp

M85049/124S21W
Amphenol PCD
1: £32.60
30In Stock

Mfr. Part No.
M85049/124S21W

Mouser Part No
523-85049124S21W

Amphenol PCD

Circular MIL Spec Backshells 124 Backshell Strain Relief Clamp

Datasheet

30In Stock

£32.60

£32.23

£32.22

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 124 Backshell Strain Relief Clamp

M85049/124S23W
Amphenol PCD
1: £34.99
2In Stock

Mfr. Part No.
M85049/124S23W

Mouser Part No
523-85049124S23W

Amphenol PCD

Circular MIL Spec Backshells 124 Backshell Strain Relief Clamp

Datasheet

2In Stock

£34.99

£34.35

£34.34

£34.12

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL

M85049/69-11Z
Amphenol PCD
1: £15.09
16In Stock
50Expected 07/05/2026

Mfr. Part No.
M85049/69-11Z

Mouser Part No
523-M85049/69-11Z

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL

Learn More

Datasheet

16In Stock

50Expected 07/05/2026

£15.09

£13.08

£12.40

£12.21

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1811Z03
Amphenol PCD
1: £53.50
2In Stock
25Expected 04/03/2026

Mfr. Part No.
M85049/1811Z03

Mouser Part No
523-M850491811Z03

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

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Datasheet

2In Stock

25Expected 04/03/2026

£53.50

£46.09

£43.20

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Backshell;Env-EMI/RFI;BZN

M85049/1813Z03
Amphenol PCD
1: £62.55
23In Stock
25Expected 26/03/2026

Mfr. Part No.
M85049/1813Z03

Mouser Part No
523-M850491813Z03

Amphenol PCD

Circular MIL Spec Backshells Backshell;Env-EMI/RFI;BZN

Learn More

Datasheet

23In Stock

25Expected 26/03/2026

£62.55

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELLS

M85049/1813Z04
Amphenol PCD
1: £56.15
12In Stock

Mfr. Part No.
M85049/1813Z04

Mouser Part No
523-M850491813Z04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELLS

Learn More

Datasheet

12In Stock

£56.15

£49.91

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells Backshell;Env-EMI/RFI;BZN

M85049/1817Z03A
Amphenol PCD
1: £59.51
25In Stock

Mfr. Part No.
M85049/1817Z03A

Mouser Part No
523-M850491817Z03A

Amphenol PCD

Circular MIL Spec Backshells Backshell;Env-EMI/RFI;BZN

Learn More

Datasheet

25In Stock

£59.51

£53.53

£51.47

View

Min.: 1
Mult.: 1

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