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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 17 Backshell Env-EMI/RFI

M85049/1710N03
Amphenol PCD
1: $69.58
13In Stock

Mfr. Part No.
M85049/1710N03

Mouser Part No
523-85049/1710N03

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

Datasheet

13In Stock

$69.58

$61.38

$56.86

$51.33

View

Min.: 1
Mult.: 1

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

M85049/1712N02
Amphenol PCD
1: $67.19
16In Stock

Mfr. Part No.
M85049/1712N02

Mouser Part No
523-85049/1712N02

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

Datasheet

16In Stock

$67.19

$60.91

$53.61

$49.56

View

Min.: 1
Mult.: 1

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

M85049/1712N04
Amphenol PCD
1: $64.15
13In Stock

Mfr. Part No.
M85049/1712N04

Mouser Part No
523-85049/1712N04

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

Datasheet

13In Stock

$64.15

$56.41

$54.24

$52.43

$49.53

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

M85049/1714N04A
Amphenol PCD
1: $75.54
3In Stock

Mfr. Part No.
M85049/1714N04A

Mouser Part No
523-85049/1714N04A

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

Datasheet

3In Stock

$75.54

$67.05

$65.76

$64.67

View

Min.: 1
Mult.: 1

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

M85049/1716N05
Amphenol PCD
1: $70.82
15In Stock

Mfr. Part No.
M85049/1716N05

Mouser Part No
523-85049/1716N05

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

Datasheet

15In Stock

$70.82

$65.30

$57.07

$54.68

View

Min.: 1
Mult.: 1

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

M85049/1716N06
Amphenol PCD
1: $72.15
1In Stock
24Expected 2026/03/09

Mfr. Part No.
M85049/1716N06

Mouser Part No
523-85049/1716N06

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

Datasheet

1In Stock

24Expected 2026/03/09

$72.15

$65.92

$56.02

$54.68

$54.67

Min.: 1
Mult.: 1

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

M85049/1811N01
Amphenol PCD
1: $59.21
23In Stock

Mfr. Part No.
M85049/1811N01

Mouser Part No
523-85049/1811N01

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

Datasheet

23In Stock

$59.21

$51.35

$46.65

$45.97

View

Min.: 1
Mult.: 1

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

M85049/1813N02
Amphenol PCD
1: $54.27
29In Stock

Mfr. Part No.
M85049/1813N02

Mouser Part No
523-85049/1813N02

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

Datasheet

29In Stock

$54.27

$48.75

$46.58

$45.73

$43.85

Min.: 1
Mult.: 1

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

M85049/1817N02
Amphenol PCD
1: $64.81
5In Stock

Mfr. Part No.
M85049/1817N02

Mouser Part No
523-85049/1817N02

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

Datasheet

5In Stock

$64.81

$60.02

$52.08

$50.04

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1817N03
Amphenol PCD
1: $54.00
22In Stock

Mfr. Part No.
M85049/1817N03

Mouser Part No
523-85049/1817N03

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

22In Stock

$54.00

$50.59

$48.44

Min.: 1
Mult.: 1

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

M85049/1819N04
Amphenol PCD
1: $68.42
9In Stock

Mfr. Part No.
M85049/1819N04

Mouser Part No
523-85049/1819N04

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

Datasheet

9In Stock

$68.42

$60.16

$57.84

$55.91

$52.84

Min.: 1
Mult.: 1

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

M85049/1819N05B
Amphenol PCD
1: $71.85
21In Stock

Mfr. Part No.
M85049/1819N05B

Mouser Part No
523-85049/1819N05B

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

Datasheet

21In Stock

$71.85

$66.91

$58.59

$56.09

View

Min.: 1
Mult.: 1

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

M85049/1819N06
Amphenol PCD
1: $71.19
24In Stock

Mfr. Part No.
M85049/1819N06

Mouser Part No
523-85049/1819N06

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

Datasheet

24In Stock

$71.19

$65.63

$56.81

$55.56

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1819N07
Amphenol PCD
1: $72.98
22In Stock

Mfr. Part No.
M85049/1819N07

Mouser Part No
523-85049/1819N07

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

22In Stock

$72.98

$68.62

$60.10

$56.36

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1821N04
Amphenol PCD
1: $73.07
4In Stock

Mfr. Part No.
M85049/1821N04

Mouser Part No
523-85049/1821N04

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

4In Stock

$73.07

$66.20

$56.79

$55.87

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 21

M85049/1821N06
Amphenol PCD
1: $69.91
12In Stock

Mfr. Part No.
M85049/1821N06

Mouser Part No
523-85049/1821N06

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 21

Datasheet

12In Stock

$69.91

$64.84

$59.85

$53.68

View

Min.: 1
Mult.: 1

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

M85049/1823N03
Amphenol PCD
1: $70.09
10In Stock
50On Order

Mfr. Part No.
M85049/1823N03

Mouser Part No
523-85049/1823N03

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

Datasheet

10In Stock

50On Order

$70.09

$62.45

$56.55

$54.09

Min.: 1
Mult.: 1

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

M85049/1823N08
Amphenol PCD
1: $80.49
19In Stock

Mfr. Part No.
M85049/1823N08

Mouser Part No
523-85049/1823N08

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

Datasheet

19In Stock

$80.49

$74.04

$67.20

$63.58

View

Min.: 1
Mult.: 1

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

M85049/1825N07A
Amphenol PCD
1: $84.72
6In Stock

Mfr. Part No.
M85049/1825N07A

Mouser Part No
523-85049/1825N07A

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

Datasheet

6In Stock

$84.72

$79.25

$70.27

$66.93

View

Min.: 1
Mult.: 1

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

M85049/1825N09
Amphenol PCD
1: $86.41
10In Stock

Mfr. Part No.
M85049/1825N09

Mouser Part No
523-85049/1825N09

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

Datasheet

10In Stock

$86.41

$79.36

$72.25

$72.23

View

Min.: 1
Mult.: 1

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

M85049/1911N03
Amphenol PCD
1: $56.51
12In Stock
175On Order

Mfr. Part No.
M85049/1911N03

Mouser Part No
523-85049/1911N03

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

Datasheet

12In Stock

175On Order

$56.51

$49.00

$47.11

$45.54

View

Min.: 1
Mult.: 1

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

M85049/1913N03
Amphenol PCD
1: $57.79
31In Stock

Mfr. Part No.
M85049/1913N03

Mouser Part No
523-85049/1913N03

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

Datasheet

31In Stock

$57.79

$49.11

$42.75

$41.72

$40.66

Min.: 1
Mult.: 1

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

M85049/1915N04
Amphenol PCD
1: $54.65
24In Stock

Mfr. Part No.
M85049/1915N04

Mouser Part No
523-85049/1915N04

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

Datasheet

24In Stock

$54.65

$51.68

$44.29

$44.28

$43.39

Min.: 1
Mult.: 1

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

M85049/1917N03
Amphenol PCD
1: $61.05
25In Stock
25Expected 2026/05/11

Mfr. Part No.
M85049/1917N03

Mouser Part No
523-85049/1917N03

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

Datasheet

25In Stock

25Expected 2026/05/11

$61.05

$54.57

$48.81

$46.49

View

Min.: 1
Mult.: 1

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

M85049/1917N06
Amphenol PCD
1: $53.30
17In Stock
25Expected 2026/03/09

Mfr. Part No.
M85049/1917N06

Mouser Part No
523-85049/1917N06

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

Datasheet

17In Stock

25Expected 2026/03/09

$53.30

$47.72

Min.: 1
Mult.: 1