Connectors – Mouser Singapore

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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 EMI/RFI ST NICKEL

M85049/25-18N
Amphenol PCD
1: $88.15
12In Stock

Mfr. Part No.
M85049/25-18N

Mouser Part No
523-85049/25-18N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

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Datasheet

12In Stock

$88.15

$80.48

$68.51

$67.19

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

M85049/25-23N
Amphenol PCD
1: $137.43
12In Stock

Mfr. Part No.
M85049/25-23N

Mouser Part No
523-85049/25-23N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

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Datasheet

12In Stock

$137.43

$116.83

$109.50

$104.29

$99.94

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

M85049/25-31N
Amphenol PCD
1: $102.53
24In Stock

Mfr. Part No.
M85049/25-31N

Mouser Part No
523-85049/25-31N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

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Datasheet

24In Stock

$102.53

$92.80

$92.78

$91.61

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 10

M85049/27-10N
Amphenol PCD
1: $17.75
2In Stock
25Expected 23/3/2026

Mfr. Part No.
M85049/27-10N

Mouser Part No
523-85049/27-10N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 10

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Datasheet

2In Stock

25Expected 23/3/2026

$17.75

$16.12

$13.97

$13.36

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 14

M85049/27-14N
Amphenol PCD
1: $17.78
17In Stock

Mfr. Part No.
M85049/27-14N

Mouser Part No
523-85049/27-14N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 14

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Datasheet

17In Stock

$17.78

$16.21

$15.78

$14.30

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 27 Backshell Grommet Nut

M85049/27-16N
Amphenol PCD
1: $16.82
5In Stock

Mfr. Part No.
M85049/27-16N

Mouser Part No
523-85049/27-16N

Amphenol PCD

Circular MIL Spec Backshells 27 Backshell Grommet Nut

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Datasheet

5In Stock

$16.82

$14.93

$13.58

$12.52

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 18

M85049/27-18N
Amphenol PCD
1: $16.97
19In Stock

Mfr. Part No.
M85049/27-18N

Mouser Part No
523-85049/27-18N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 18

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Datasheet

19In Stock

$16.97

$15.51

$13.91

$13.64

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 20

M85049/27-20N
Amphenol PCD
1: $16.43
2In Stock

Mfr. Part No.
M85049/27-20N

Mouser Part No
523-85049/27-20N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 20

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Datasheet

2In Stock

$16.43

$15.16

$14.71

$12.40

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 22

M85049/27-22N
Amphenol PCD
1: $21.42
4In Stock

Mfr. Part No.
M85049/27-22N

Mouser Part No
523-85049/27-22N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 22

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Datasheet

4In Stock

$21.42

$18.99

$18.26

$17.36

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 24

M85049/27-24N
Amphenol PCD
1: $18.45
21In Stock

Mfr. Part No.
M85049/27-24N

Mouser Part No
523-85049/27-24N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 24

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Datasheet

21In Stock

$18.45

$17.38

$14.75

$13.73

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 08

M85049/27-8N
Amphenol PCD
1: $18.61
27In Stock

Mfr. Part No.
M85049/27-8N

Mouser Part No
523-85049/27-8N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NICKEL SZ 08

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Datasheet

27In Stock

$18.61

$16.50

$15.86

$15.08

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 12

M85049/27S12N
Amphenol PCD
1: $27.74
23In Stock

Mfr. Part No.
M85049/27S12N

Mouser Part No
523-85049/27S12N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 12

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Datasheet

23In Stock

$27.74

$23.59

$22.10

$21.04

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 10

M85049/2910A02A
Amphenol PCD
1: $53.58
1In Stock
25Expected 12/5/2026

Mfr. Part No.
M85049/2910A02A

Mouser Part No
523-85049/2910A02A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 10

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Datasheet

1In Stock

25Expected 12/5/2026

$53.58

$46.59

$44.58

$43.15

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 10

M85049/2910N03
Amphenol PCD
1: $53.60
15In Stock

Mfr. Part No.
M85049/2910N03

Mouser Part No
523-85049/2910N03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 10

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Datasheet

15In Stock

$53.60

$49.57

$42.12

$41.70

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 12

M85049/2912N04
Amphenol PCD
1: $55.09
21In Stock

Mfr. Part No.
M85049/2912N04

Mouser Part No
523-85049/2912N04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 12

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Datasheet

21In Stock

$55.09

$47.89

$45.81

$44.34

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 29 Backshell Non Env

M85049/2914N04
Amphenol PCD
1: $56.52
19In Stock

Mfr. Part No.
M85049/2914N04

Mouser Part No
523-85049/2914N04

Amphenol PCD

Circular MIL Spec Backshells 29 Backshell Non Env

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Datasheet

19In Stock

$56.52

$49.14

$47.01

$45.49

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 14

M85049/2914N05
Amphenol PCD
1: $63.63
18In Stock

Mfr. Part No.
M85049/2914N05

Mouser Part No
523-85049/2914N05

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 14

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Datasheet

18In Stock

$63.63

$56.30

$53.10

$48.00

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 14

M85049/2914N05A
Amphenol PCD
1: $59.31
6In Stock

Mfr. Part No.
M85049/2914N05A

Mouser Part No
523-85049/2914N05A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 14

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Datasheet

6In Stock

$59.31

$50.42

$47.25

$44.99

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 16

M85049/2916N02
Amphenol PCD
1: $52.67
1In Stock

Mfr. Part No.
M85049/2916N02

Mouser Part No
523-85049/2916N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 16

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Datasheet

1In Stock

$52.67

$48.69

$41.38

$40.96

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 16

M85049/2916N04
Amphenol PCD
1: $58.07
22In Stock

Mfr. Part No.
M85049/2916N04

Mouser Part No
523-85049/2916N04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 16

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Datasheet

22In Stock

$58.07

$50.50

$45.84

$45.13

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 29 Backshell Non Env

M85049/2918N07A
Amphenol PCD
1: $65.11
10In Stock

Mfr. Part No.
M85049/2918N07A

Mouser Part No
523-85049/2918N07A

Amphenol PCD

Circular MIL Spec Backshells 29 Backshell Non Env

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Datasheet

10In Stock

$65.11

$56.61

$50.90

$49.04

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 18

M85049/2918N07B
Amphenol PCD
1: $65.79
26In Stock

Mfr. Part No.
M85049/2918N07B

Mouser Part No
523-85049/2918N07B

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 18

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Datasheet

26In Stock

$65.79

$56.18

$54.00

$52.32

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 20

M85049/2920N04A
Amphenol PCD
1: $61.20
5In Stock

Mfr. Part No.
M85049/2920N04A

Mouser Part No
523-85049/2920N04A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 20

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Datasheet

5In Stock

$61.20

$53.21

$50.92

$49.26

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 20

M85049/2920N05
Amphenol PCD
1: $61.22
6In Stock
19Expected 23/3/2026

Mfr. Part No.
M85049/2920N05

Mouser Part No
523-85049/2920N05

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 20

Learn More

Datasheet

6In Stock

19Expected 23/3/2026

$61.22

$51.12

$48.11

$46.36

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 20

M85049/2920N08A
Amphenol PCD
1: $64.97
29In Stock

Mfr. Part No.
M85049/2920N08A

Mouser Part No
523-85049/2920N08A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NICKEL SZ 20

Learn More

Datasheet

29In Stock

$64.97

$59.16

$50.28

$48.71

View

Min.: 1
Mult.: 1

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