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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 BACKSHELL NON ENV EMI/RFI ST CAD SZ 15

M85049/1915W05
Amphenol PCD
1: £53.28
61In Stock

Mfr. Part No.
M85049/1915W05

Mouser Part No
523-85049/1915W05

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

Datasheet

61In Stock

£53.28

£48.00

£43.27

£37.85

View

Min.: 1
Mult.: 1

No

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

M85049/1917W03
Amphenol PCD
1: £56.53
34In Stock

Mfr. Part No.
M85049/1917W03

Mouser Part No
523-85049/1917W03

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

Datasheet

34In Stock

£56.53

£51.17

£45.52

£41.10

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

M85049/1917W06
Amphenol PCD
1: £54.51
38In Stock

Mfr. Part No.
M85049/1917W06

Mouser Part No
523-85049/1917W06

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

Datasheet

38In Stock

£54.51

£49.53

£45.72

£41.57

View

Min.: 1
Mult.: 1

No

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

M85049/1917W06A
Amphenol PCD
1: £54.03
25In Stock

Mfr. Part No.
M85049/1917W06A

Mouser Part No
523-85049/1917W06A

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

Datasheet

25In Stock

£54.03

£50.49

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 23

M85049/1923W09
Amphenol PCD
1: £59.70
22In Stock

Mfr. Part No.
M85049/1923W09

Mouser Part No
523-85049/1923W09

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 23

Datasheet

22In Stock

£59.70

£54.66

£50.26

£49.32

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 25

M85049/1925W07
Amphenol PCD
1: £62.19
29In Stock

Mfr. Part No.
M85049/1925W07

Mouser Part No
523-85049/1925W07

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 25

Datasheet

29In Stock

£62.19

£58.22

£51.54

£49.12

Quote

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/2111W03
Amphenol PCD
1: £38.16
54In Stock

Mfr. Part No.
M85049/2111W03

Mouser Part No
523-85049/2111W03

Circular MIL Spec Backshells 21 Backshell Non Env

Datasheet

54In Stock

£38.16

£33.44

£31.43

£30.19

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

M85049/25-10W
Amphenol PCD
1: £50.20
106In Stock

Mfr. Part No.
M85049/25-10W

Mouser Part No
523-85049/25-10W

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

Datasheet

106In Stock

£50.20

£45.36

£40.79

£38.76

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

M85049/25-13W
Amphenol PCD
1: £49.38
66In Stock

Mfr. Part No.
M85049/25-13W

Mouser Part No
523-85049/25-13W

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

Datasheet

66In Stock

£49.38

£47.05

£40.55

£37.94

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

M85049/25-17W
Amphenol PCD
1: £47.35
58In Stock

Mfr. Part No.
M85049/25-17W

Mouser Part No
523-85049/25-17W

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

Datasheet

58In Stock

£47.35

£42.72

£41.93

£39.53

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

M85049/25-19W
Amphenol PCD
1: £75.76
21In Stock

Mfr. Part No.
M85049/25-19W

Mouser Part No
523-85049/25-19W

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

Datasheet

21In Stock

£75.76

£75.47

£75.46

£70.97

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 25 Backshell Non Env-EMI/RFI

M85049/25-33W
Amphenol PCD
1: £78.11
27In Stock

Mfr. Part No.
M85049/25-33W

Mouser Part No
523-85049/25-33W

Circular MIL Spec Backshells 25 Backshell Non Env-EMI/RFI

Datasheet

27In Stock

£78.11

£63.19

£57.84

Quote

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

M85049/25-35W
Amphenol PCD
1: £86.94
19In Stock

Mfr. Part No.
M85049/25-35W

Mouser Part No
523-85049/25-35W

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

Datasheet

19In Stock

£86.94

£85.19

£79.84

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

M85049/25-76W
Amphenol PCD
1: £123.06
15In Stock

Mfr. Part No.
M85049/25-76W

Mouser Part No
523-85049/25-76W

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST OD CAD

Datasheet

15In Stock

£123.06

£114.17

£104.33

£102.95

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST CAD SZ 14

M85049/31-14W
Amphenol PCD
1: £11.40
440In Stock
700Expected 09/03/2026

Mfr. Part No.
M85049/31-14W

Mouser Part No
523-85049/31-14W

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST CAD SZ 14

Datasheet

440In Stock

700Expected 09/03/2026

£11.40

£9.69

£9.09

£8.65

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 36 Backshell Non Env-EMI/RFI

M85049/3618W07
Amphenol PCD
1: £48.40
25In Stock

Mfr. Part No.
M85049/3618W07

Mouser Part No
523-85049/3618W07

Circular MIL Spec Backshells 36 Backshell Non Env-EMI/RFI

Datasheet

25In Stock

£48.40

£43.13

£42.07

£41.80

Quote

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

M85049/6-23W
Amphenol PCD
1: £89.12
17In Stock

Mfr. Part No.
M85049/6-23W

Mouser Part No
523-85049/6-23W

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

Datasheet

17In Stock

£89.12

£83.01

£76.77

£76.00

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

M85049/6-30W
Amphenol PCD
1: £133.18
27In Stock

Mfr. Part No.
M85049/6-30W

Mouser Part No
523-85049/6-30W

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

Datasheet

27In Stock

£133.18

£114.99

£110.76

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

M85049/6-63W
Amphenol PCD
1: £89.12
21In Stock

Mfr. Part No.
M85049/6-63W

Mouser Part No
523-85049/6-63W

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

Datasheet

21In Stock

£89.12

£83.01

£76.77

£76.00

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD SZ 12

M85049/76-12W04
Amphenol PCD
1: £61.49
25In Stock

Mfr. Part No.
M85049/76-12W04

Mouser Part No
523-85049/76-12W04

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD SZ 12

Datasheet

25In Stock

£61.49

£58.81

£55.59

£53.20

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD SZ 16

M85049/76-16W04
Amphenol PCD
1: £63.04
20In Stock

Mfr. Part No.
M85049/76-16W04

Mouser Part No
523-85049/76-16W04

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD SZ 16

Datasheet

20In Stock

£63.04

£60.14

£52.14

£51.86

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL EMI/RFI 45 DEG OD CAD SZ 09

M85049/78-17W04
Amphenol PCD
1: £65.08
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
M85049/78-17W04

Mouser Part No
523-85049/78-17W04

Circular MIL Spec Backshells BACKSHELL EMI/RFI 45 DEG OD CAD SZ 09

Datasheet

Non-Stocked Lead-Time 12 Weeks

£65.08

£59.80

£59.79

£59.33

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 78 Backshell Env-EMI/RFI

M85049/78-25W08
Amphenol PCD
1: £94.16
17In Stock

Mfr. Part No.
M85049/78-25W08

Mouser Part No
523-85049/78-25W08

Circular MIL Spec Backshells 78 Backshell Env-EMI/RFI

Datasheet

17In Stock

£94.16

£86.83

£68.90

£64.45

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD SZ 9

M85049/79-09W02
Amphenol PCD
1: £60.10
25In Stock

Mfr. Part No.
M85049/79-09W02

Mouser Part No
523-85049/79-09W02

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD SZ 9

Datasheet

25In Stock

£60.10

£55.59

£50.35

£44.16

Min.: 1
Mult.: 1

No

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

M85049/79-11W02
Amphenol PCD
1: £58.48
25In Stock
50Expected 26/06/2026

Mfr. Part No.
M85049/79-11W02

Mouser Part No
523-85049/79-11W02

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

Datasheet

25In Stock

50Expected 26/06/2026

£58.48

£54.42

£49.20

£47.96

View

Min.: 1
Mult.: 1