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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 ENV EMI/ RFI ST OD CAD SZ 36

M85049/10-75W
Amphenol PCD
1: $176.07
9In Stock

Mfr. Part No.
M85049/10-75W

Mouser Part No
523-85049/10-75W

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 36

Datasheet

9In Stock

$176.07

$154.14

$146.41

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 40

M85049/10-79W
Amphenol PCD
1: $214.21
19In Stock

Mfr. Part No.
M85049/10-79W

Mouser Part No
523-85049/10-79W

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 40

Datasheet

19In Stock

$214.21

$199.41

$199.40

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-11W
Amphenol PCD
1: $110.58
25In Stock

Mfr. Part No.
M85049/11-11W

Mouser Part No
523-85049/11-11W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

25In Stock

$110.58

$101.97

$83.63

$77.58

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-13W
Amphenol PCD
1: $55.75
62In Stock

Mfr. Part No.
M85049/11-13W

Mouser Part No
523-85049/11-13W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

62In Stock

$55.75

$51.77

$49.83

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-148W
Amphenol PCD
1: $160.78
21In Stock

Mfr. Part No.
M85049/11-148W

Mouser Part No
523-85049/11-148W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

21In Stock

$160.78

$149.20

$139.40

$137.15

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 11 Backshell Env

M85049/11-150W
Amphenol PCD
1: $71.19
42In Stock

Mfr. Part No.
M85049/11-150W

Mouser Part No
523-85049/11-150W

Circular MIL Spec Backshells 11 Backshell Env

Datasheet

42In Stock

$71.19

$67.62

$66.69

$61.44

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-25W
Amphenol PCD
1: $87.48
79In Stock

Mfr. Part No.
M85049/11-25W

Mouser Part No
523-85049/11-25W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

79In Stock

$87.48

$79.77

$77.67

$66.01

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-33W
Amphenol PCD
1: $62.45
25In Stock

Mfr. Part No.
M85049/11-33W

Mouser Part No
523-85049/11-33W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

25In Stock

$62.45

$59.78

$58.52

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-37W
Amphenol PCD
1: $111.47
28In Stock

Mfr. Part No.
M85049/11-37W

Mouser Part No
523-85049/11-37W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

28In Stock

$111.47

$105.89

$89.99

$88.02

$87.78

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 11 Backshell Env

M85049/11-43W
Amphenol PCD
1: $72.14
26In Stock

Mfr. Part No.
M85049/11-43W

Mouser Part No
523-85049/11-43W

Circular MIL Spec Backshells 11 Backshell Env

Datasheet

26In Stock

$72.14

$67.34

$67.12

$63.97

$63.51

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-47W
Amphenol PCD
1: $91.63
20In Stock

Mfr. Part No.
M85049/11-47W

Mouser Part No
523-85049/11-47W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

20In Stock

$91.63

$83.56

$80.34

$77.67

$73.37

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-59W
Amphenol PCD
1: $110.05
18In Stock

Mfr. Part No.
M85049/11-59W

Mouser Part No
523-85049/11-59W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

18In Stock

$110.05

$102.63

$94.62

$93.88

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

M85049/1714W03
Amphenol PCD
1: $70.94
27In Stock

Mfr. Part No.
M85049/1714W03

Mouser Part No
523-85049/1714W03

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

Datasheet

27In Stock

$70.94

$62.38

$59.98

$57.98

$54.78

Min.: 1
Mult.: 1

No

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

M85049/1716W06
Amphenol PCD
1: $79.40
44In Stock

Mfr. Part No.
M85049/1716W06

Mouser Part No
523-85049/1716W06

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

Datasheet

44In Stock

$79.40

$70.57

$67.86

$65.59

$61.98

Min.: 1
Mult.: 1

No

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

M85049/1811W03
Amphenol PCD
1: $54.45
102In Stock
100Expected 2026/03/25

Mfr. Part No.
M85049/1811W03

Mouser Part No
523-85049/1811W03

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

Datasheet

102In Stock

100Expected 2026/03/25

$54.45

$50.39

$48.61

$44.60

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1811W03A
Amphenol PCD
1: $64.42
41In Stock

Mfr. Part No.
M85049/1811W03A

Mouser Part No
523-85049/1811W03A

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

41In Stock

$64.42

$58.70

$51.36

$51.35

$50.94

Min.: 1
Mult.: 1

No

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

M85049/1813W02
Amphenol PCD
1: $63.33
52In Stock

Mfr. Part No.
M85049/1813W02

Mouser Part No
523-85049/1813W02

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

Datasheet

52In Stock

$63.33

$55.45

$52.77

$50.25

$48.24

Min.: 1
Mult.: 1

No

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

M85049/1815W03
Amphenol PCD
1: $62.57
66In Stock

Mfr. Part No.
M85049/1815W03

Mouser Part No
523-85049/1815W03

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

Datasheet

66In Stock

$62.57

$56.35

$53.38

$53.34

$51.49

Min.: 1
Mult.: 1

No

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

M85049/1815W04
Amphenol PCD
1: $81.71
155In Stock

Mfr. Part No.
M85049/1815W04

Mouser Part No
523-85049/1815W04

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

Datasheet

155In Stock

$81.71

$74.78

$63.56

$58.30

$53.00

Min.: 1
Mult.: 1

No

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

M85049/1815W04A
Amphenol PCD
1: $73.00
35In Stock

Mfr. Part No.
M85049/1815W04A

Mouser Part No
523-85049/1815W04A

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

Datasheet

35In Stock

$73.00

$68.55

$64.22

$59.30

View

Min.: 1
Mult.: 1

No

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

M85049/1815W05
Amphenol PCD
1: $68.66
104In Stock

Mfr. Part No.
M85049/1815W05

Mouser Part No
523-85049/1815W05

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

Datasheet

104In Stock

$68.66

$61.26

$57.78

$55.73

View

Min.: 1
Mult.: 1

No

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

M85049/1817W05
Amphenol PCD
1: $75.12
46In Stock

Mfr. Part No.
M85049/1817W05

Mouser Part No
523-85049/1817W05

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

Datasheet

46In Stock

$75.12

$65.06

$60.99

$60.98

$56.51

Min.: 1
Mult.: 1

No

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

M85049/1817W06
Amphenol PCD
1: $71.33
49In Stock

Mfr. Part No.
M85049/1817W06

Mouser Part No
523-85049/1817W06

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

Datasheet

49In Stock

$71.33

$65.69

$63.00

$58.41

Quote

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 19

M85049/1819W05
Amphenol PCD
1: $75.58
62In Stock

Mfr. Part No.
M85049/1819W05

Mouser Part No
523-85049/1819W05

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 19

Datasheet

62In Stock

$75.58

$64.26

$60.22

$57.35

$55.74

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 19

M85049/1819W07
Amphenol PCD
1: $101.06
52In Stock

Mfr. Part No.
M85049/1819W07

Mouser Part No
523-85049/1819W07

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 19

Datasheet

52In Stock

$101.06

$86.11

$80.91

$65.28

View

Min.: 1
Mult.: 1

No