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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 11 Backshell Env

M85049/11-17N
Amphenol PCD
1: €55.87
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

€55.87

€50.57

€43.60

€41.62

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-18N
Amphenol PCD
1: €51.61
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

€51.61

€48.79

€41.46

€40.55

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-19N
Amphenol PCD
1: €80.86
16In Stock

Mfr. Part No.
M85049/11-19N

Mouser Part No
523-85049/11-19N

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

Datasheet

16In Stock

€80.86

€75.14

€68.75

€68.52

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 11 Backshell Env

M85049/11-21N
Amphenol PCD
1: €58.18
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

€58.18

€52.56

€47.29

€44.93

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-22N
Amphenol PCD
1: €58.18
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

€58.18

€51.16

€49.19

€47.55

€44.93

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-25N
Amphenol PCD
1: €60.54
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

€60.54

€54.64

€49.25

€46.74

View

Min.: 1
Mult.: 1

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

M85049/14S11N
Amphenol PCD
1: €18.38
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

€18.38

€17.25

€13.60

€12.19

View

Min.: 1
Mult.: 1

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

M85049/14S13N
Amphenol PCD
1: €20.35
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

€20.35

€20.34

€15.77

€12.78

View

Min.: 1
Mult.: 1

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

M85049/14S15N
Amphenol PCD
1: €25.17
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

€25.17

€20.19

€18.23

€12.96

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 21

M85049/14S21N
Amphenol PCD
1: €20.61
13In Stock

Mfr. Part No.
M85049/14S21N

Mouser Part No
523-85049/14S21N

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 21

Datasheet

13In Stock

€20.61

€18.40

€17.10

€14.33

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

M85049/1710N03
Amphenol PCD
1: €59.83
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

€59.83

€52.78

€48.89

€44.14

View

Min.: 1
Mult.: 1

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

M85049/1712N02
Amphenol PCD
1: €57.77
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

€57.77

€52.37

€46.10

€42.61

View

Min.: 1
Mult.: 1

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

M85049/1712N04
Amphenol PCD
1: €55.16
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

€55.16

€48.50

€46.64

€45.08

€42.59

Min.: 1
Mult.: 1

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

M85049/1716N05
Amphenol PCD
1: €60.89
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

€60.89

€56.15

€49.07

€47.02

View

Min.: 1
Mult.: 1

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

M85049/1716N06
Amphenol PCD
1: €62.04
1In Stock
24Expected 09/03/2026

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 09/03/2026

€62.04

€56.68

€48.17

€47.02

€47.01

Min.: 1
Mult.: 1

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

M85049/1811N01
Amphenol PCD
1: €50.91
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

€50.91

€44.15

€40.11

€39.53

View

Min.: 1
Mult.: 1

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

M85049/1813N02
Amphenol PCD
1: €46.66
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

€46.66

€41.92

€40.05

€39.32

€37.70

Min.: 1
Mult.: 1

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

M85049/1815N03
Amphenol PCD
1: €46.90
10In Stock
25Expected 15/04/2026

Mfr. Part No.
M85049/1815N03

Mouser Part No
523-85049/1815N03

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

Datasheet

10In Stock

25Expected 15/04/2026

€46.90

€42.85

€40.21

Min.: 1
Mult.: 1

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

M85049/1817N02
Amphenol PCD
1: €55.73
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

€55.73

€51.61

€44.78

€43.03

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1817N03
Amphenol PCD
1: €46.43
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

€46.43

€43.50

€41.65

Min.: 1
Mult.: 1

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

M85049/1817N05
Amphenol PCD
1: €62.46
22In Stock
25Expected 23/02/2026

Mfr. Part No.
M85049/1817N05

Mouser Part No
523-85049/1817N05

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

Datasheet

22In Stock

25Expected 23/02/2026

€62.46

€57.01

€52.28

€46.65

View

Min.: 1
Mult.: 1

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

M85049/1819N04
Amphenol PCD
1: €58.83
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

€58.83

€51.73

€49.73

€48.07

€45.43

Min.: 1
Mult.: 1

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

M85049/1819N05B
Amphenol PCD
1: €61.78
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

€61.78

€57.53

€50.38

€48.23

View

Min.: 1
Mult.: 1

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

M85049/1819N06
Amphenol PCD
1: €61.21
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

€61.21

€56.43

€48.85

€47.77

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1819N07
Amphenol PCD
1: €62.75
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

€62.75

€59.00

€51.68

€48.46

View

Min.: 1
Mult.: 1