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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 ST BLACK SZ 17

M85049/2117A03A
Amphenol PCD
1: $63.63
40In Stock

Mfr. Part No.
M85049/2117A03A

Mouser Part No
523-85049/2117A03A

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 17

Datasheet

40In Stock

$63.63

$55.32

$52.06

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 17

M85049/2117A04
Amphenol PCD
1: $63.63
14In Stock

Mfr. Part No.
M85049/2117A04

Mouser Part No
523-85049/2117A04

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 17

Datasheet

14In Stock

$63.63

$55.32

$52.06

$50.31

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 17

M85049/2117A06
Amphenol PCD
1: $67.50
7In Stock

Mfr. Part No.
M85049/2117A06

Mouser Part No
523-85049/2117A06

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 17

Datasheet

7In Stock

$67.50

$58.68

$55.22

$51.54

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 17

M85049/2117N02A
Amphenol PCD
1: $61.78
3In Stock

Mfr. Part No.
M85049/2117N02A

Mouser Part No
523-85049/2117N02A

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 17

Datasheet

3In Stock

$61.78

$53.72

$50.55

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/2117N05
Amphenol PCD
1: $66.10
12In Stock

Mfr. Part No.
M85049/2117N05

Mouser Part No
523-85049/2117N05

Circular MIL Spec Backshells 21 Backshell Non Env

Datasheet

12In Stock

$66.10

$56.68

$53.14

$50.59

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 17

M85049/2117N05A
Amphenol PCD
1: $68.03
3In Stock
25Expected 29/9/2026

Mfr. Part No.
M85049/2117N05A

Mouser Part No
523-85049/2117N05A

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 17

Datasheet

3In Stock

25Expected 29/9/2026

$68.03

$58.26

$54.60

$52.01

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/2117N06A
Amphenol PCD
1: $69.54
13In Stock

Mfr. Part No.
M85049/2117N06A

Mouser Part No
523-85049/2117N06A

Circular MIL Spec Backshells 21 Backshell Non Env

Datasheet

13In Stock

$69.54

$60.47

$56.90

$56.48

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 19

M85049/2119A07B
Amphenol PCD
1: $73.66
4In Stock

Mfr. Part No.
M85049/2119A07B

Mouser Part No
523-85049/2119A07B

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 19

Datasheet

4In Stock

$73.66

$64.04

$60.28

$60.10

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/2119N04
Amphenol PCD
1: $63.55
22In Stock

Mfr. Part No.
M85049/2119N04

Mouser Part No
523-85049/2119N04

Circular MIL Spec Backshells 21 Backshell Non Env

Datasheet

22In Stock

$63.55

$55.26

$51.99

$51.80

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 19

M85049/2119N06
Amphenol PCD
1: $67.42
15In Stock

Mfr. Part No.
M85049/2119N06

Mouser Part No
523-85049/2119N06

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 19

Datasheet

15In Stock

$67.42

$58.62

$52.46

$50.66

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 19

M85049/2119N07
Amphenol PCD
1: $69.90
2In Stock
25Expected 24/11/2026

Mfr. Part No.
M85049/2119N07

Mouser Part No
523-85049/2119N07

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 19

Datasheet

2In Stock

25Expected 24/11/2026

$69.90

$59.80

$56.05

$53.38

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 21

M85049/2121A03
Amphenol PCD
1: $63.50
4In Stock

Mfr. Part No.
M85049/2121A03

Mouser Part No
523-85049/2121A03

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 21

Datasheet

4In Stock

$63.50

$55.22

$51.95

$50.65

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 21

M85049/2121A08B
Amphenol PCD
1: $75.34
3In Stock

Mfr. Part No.
M85049/2121A08B

Mouser Part No
523-85049/2121A08B

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 21

Datasheet

3In Stock

$75.34

$65.33

$63.85

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 21

M85049/2121N03
Amphenol PCD
1: $63.47
17In Stock

Mfr. Part No.
M85049/2121N03

Mouser Part No
523-85049/2121N03

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 21

Datasheet

17In Stock

$63.47

$55.19

$51.95

$50.88

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/2121N05
Amphenol PCD
1: $65.73
16In Stock

Mfr. Part No.
M85049/2121N05

Mouser Part No
523-85049/2121N05

Circular MIL Spec Backshells 21 Backshell Non Env

Datasheet

16In Stock

$65.73

$55.87

$55.04

$53.65

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/2121N07A
Amphenol PCD
1: $73.48
1In Stock

Mfr. Part No.
M85049/2121N07A

Mouser Part No
523-85049/2121N07A

Circular MIL Spec Backshells 21 Backshell Non Env

Datasheet

1In Stock

$73.48

$61.39

$60.14

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 23

M85049/2123A09A
Amphenol PCD
1: $79.82
7In Stock

Mfr. Part No.
M85049/2123A09A

Mouser Part No
523-85049/2123A09A

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 23

Datasheet

7In Stock

$79.82

$67.65

$67.63

$66.69

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 23

M85049/2123N05
Amphenol PCD
1: $71.28
2In Stock

Mfr. Part No.
M85049/2123N05

Mouser Part No
523-85049/2123N05

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 23

Datasheet

2In Stock

$71.28

$58.33

$58.32

$53.35

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 23

M85049/2123N06
Amphenol PCD
1: $73.71
25In Stock

Mfr. Part No.
M85049/2123N06

Mouser Part No
523-85049/2123N06

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 23

Datasheet

25In Stock

$73.71

$62.91

$61.05

$56.15

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

M85049/2125A06A
Amphenol PCD
1: $75.13
13In Stock

Mfr. Part No.
M85049/2125A06A

Mouser Part No
523-85049/2125A06A

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

Datasheet

13In Stock

$75.13

$65.14

$63.66

$61.12

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

M85049/2125A08
Amphenol PCD
1: $77.28
19In Stock

Mfr. Part No.
M85049/2125A08

Mouser Part No
523-85049/2125A08

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

Datasheet

19In Stock

$77.28

$67.01

$64.49

$62.83

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

M85049/2125N06A
Amphenol PCD
1: $76.11
14In Stock

Mfr. Part No.
M85049/2125N06A

Mouser Part No
523-85049/2125N06A

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

Datasheet

14In Stock

$76.11

$65.27

$62.19

$59.23

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

M85049/2125N08A
Amphenol PCD
1: $79.60
9In Stock

Mfr. Part No.
M85049/2125N08A

Mouser Part No
523-85049/2125N08A

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

Datasheet

9In Stock

$79.60

$69.02

$67.46

$64.44

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

M85049/2125N10
Amphenol PCD
1: $83.29
11In Stock

Mfr. Part No.
M85049/2125N10

Mouser Part No
523-85049/2125N10

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

Datasheet

11In Stock

$83.29

$71.50

$67.37

$64.16

$61.10

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/219N01
Amphenol PCD
1: $53.41
21In Stock

Mfr. Part No.
M85049/219N01

Mouser Part No
523-85049/219N01

Circular MIL Spec Backshells 21 Backshell Non Env

Datasheet

21In Stock

$53.41

$45.40

$43.87

$43.53

View

Min.: 1
Mult.: 1