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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 BND LOCK ADPTR R/A CAD SZ 17

M85049/90-17W02
Amphenol PCD
1: £58.21
30In Stock
50Expected 06/04/2026

Mfr. Part No.
M85049/90-17W02

Mouser Part No
523-85049/90-17W02

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 17

Datasheet

30In Stock

50Expected 06/04/2026

£58.21

£54.27

£47.67

£47.66

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 17

M85049/90-17W03
Amphenol PCD
1: £64.36
59In Stock

Mfr. Part No.
M85049/90-17W03

Mouser Part No
523-85049/90-17W03

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 17

Datasheet

59In Stock

£64.36

£58.33

£53.23

£48.67

£44.86

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 19

M85049/90-19W02
Amphenol PCD
1: £62.52
26In Stock

Mfr. Part No.
M85049/90-19W02

Mouser Part No
523-85049/90-19W02

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 19

Datasheet

26In Stock

£62.52

£53.15

£49.81

£47.44

£46.53

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 19

M85049/90-19W03
Amphenol PCD
1: £71.40
54In Stock

Mfr. Part No.
M85049/90-19W03

Mouser Part No
523-85049/90-19W03

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 19

Datasheet

54In Stock

£71.40

£66.59

£56.44

£52.28

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 23

M85049/90-23W02
Amphenol PCD
1: £84.28
25In Stock

Mfr. Part No.
M85049/90-23W02

Mouser Part No
523-85049/90-23W02

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 23

Datasheet

25In Stock

£84.28

£76.78

£56.52

£52.92

£51.90

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 23

M85049/90-23W03
Amphenol PCD
1: £69.05
22In Stock

Mfr. Part No.
M85049/90-23W03

Mouser Part No
523-85049/90-23W03

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A CAD SZ 23

Datasheet

22In Stock

£69.05

£58.74

£55.05

£52.42

£51.90

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells Circular MIL Spec Backshells

M85049/189N02
Amphenol PCD
1: £31.63
58In Stock

Mfr. Part No.
M85049/189N02

Mouser Part No
523-M85049/189N02

Circular MIL Spec Backshells Circular MIL Spec Backshells

Datasheet

58In Stock

£31.63

Min.: 1
Mult.: 1

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

M85049/1815Z03
Amphenol PCD
1: £56.46
75In Stock

Mfr. Part No.
M85049/1815Z03

Mouser Part No
523-M850491815Z03

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

Datasheet

75In Stock

£56.46

£50.19

£48.25

£46.64

View

Min.: 1
Mult.: 1

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

M85049/1817Z04
Amphenol PCD
1: £59.52
53In Stock

Mfr. Part No.
M85049/1817Z04

Mouser Part No
523-M850491817Z04

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

Datasheet

53In Stock

£59.52

£55.82

£49.27

View

Min.: 1
Mult.: 1

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

M85049/1821Z05
Amphenol PCD
1: £60.15
25In Stock

Mfr. Part No.
M85049/1821Z05

Mouser Part No
523-M850491821Z05

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

Datasheet

25In Stock

£60.15

£54.10

£47.97

View

Min.: 1
Mult.: 1

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

M85049/1825Z09
Amphenol PCD
1: £75.48
19In Stock

Mfr. Part No.
M85049/1825Z09

Mouser Part No
523-M850491825Z09

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

Datasheet

19In Stock

£75.48

£71.11

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 14

M85049/10-116N
Amphenol PCD
1: £57.30
13In Stock

Mfr. Part No.
M85049/10-116N

Mouser Part No
523-85049/10-116N

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 14

Datasheet

13In Stock

£57.30

£50.32

£47.21

£46.55

£44.00

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 18

M85049/10-25N
Amphenol PCD
1: £90.59
6In Stock
25Expected 14/04/2026

Mfr. Part No.
M85049/10-25N

Mouser Part No
523-85049/10-25N

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 18

Datasheet

6In Stock

25Expected 14/04/2026

£90.59

£77.95

£69.29

£58.02

£47.70

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 22

M85049/10-45N
Amphenol PCD
1: £106.84
17In Stock

Mfr. Part No.
M85049/10-45N

Mouser Part No
523-85049/10-45N

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 22

Datasheet

17In Stock

£106.84

£98.05

£94.28

£91.12

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 28

M85049/10-57N
Amphenol PCD
1: £90.65
5In Stock

Mfr. Part No.
M85049/10-57N

Mouser Part No
523-85049/10-57N

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 28

Datasheet

5In Stock

£90.65

£86.02

£85.10

£75.56

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-13N
Amphenol PCD
1: £47.49
23In Stock
25Expected 29/04/2026

Mfr. Part No.
M85049/11-13N

Mouser Part No
523-85049/11-13N

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

Datasheet

23In Stock

25Expected 29/04/2026

£47.49

£42.41

£37.99

£36.15

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 11 Backshell Env

M85049/11-17N
Amphenol PCD
1: £48.77
15In Stock

Mfr. Part No.
M85049/11-17N

Mouser Part No
523-85049/11-17N

Circular MIL Spec Backshells 11 Backshell Env

Datasheet

15In Stock

£48.77

£44.15

£38.06

£36.33

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-18N
Amphenol PCD
1: £45.06
18In Stock
25Expected 23/03/2026

Mfr. Part No.
M85049/11-18N

Mouser Part No
523-85049/11-18N

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

Datasheet

18In Stock

25Expected 23/03/2026

£45.06

£42.59

£36.19

£35.40

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-19N
Amphenol PCD
1: £70.59
6In Stock

Mfr. Part No.
M85049/11-19N

Mouser Part No
523-85049/11-19N

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

Datasheet

6In Stock

£70.59

£65.60

£60.02

£59.82

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 11 Backshell Env

M85049/11-21N
Amphenol PCD
1: £50.79
6In Stock

Mfr. Part No.
M85049/11-21N

Mouser Part No
523-85049/11-21N

Circular MIL Spec Backshells 11 Backshell Env

Datasheet

6In Stock

£50.79

£45.88

£41.28

£39.22

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-22N
Amphenol PCD
1: £50.79
22In Stock

Mfr. Part No.
M85049/11-22N

Mouser Part No
523-85049/11-22N

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

Datasheet

22In Stock

£50.79

£44.66

£42.94

£41.51

£39.22

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-25N
Amphenol PCD
1: £52.85
1In Stock

Mfr. Part No.
M85049/11-25N

Mouser Part No
523-85049/11-25N

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

Datasheet

1In Stock

£52.85

£47.70

£43.00

£40.80

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 11

M85049/14S11N
Amphenol PCD
1: £16.05
32In Stock

Mfr. Part No.
M85049/14S11N

Mouser Part No
523-85049/14S11N

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 11

Datasheet

32In Stock

£16.05

£15.06

£11.87

£10.64

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 13

M85049/14S13N
Amphenol PCD
1: £17.77
24In Stock

Mfr. Part No.
M85049/14S13N

Mouser Part No
523-85049/14S13N

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 13

Datasheet

24In Stock

£17.77

£17.76

£13.77

£11.16

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 15

M85049/14S15N
Amphenol PCD
1: £21.97
30In Stock

Mfr. Part No.
M85049/14S15N

Mouser Part No
523-85049/14S15N

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 15

Datasheet

30In Stock

£21.97

£17.63

£15.91

£11.31

View

Min.: 1
Mult.: 1