Connectors – Mouser United Kingdom

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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 BND LOCK ADPTR ST NIC SZ 18

M85049/85-18N02
Amphenol PCD
1: £40.99
6In Stock
25Expected 11/05/2026

Mfr. Part No.
M85049/85-18N02

Mouser Part No
523-85049/85-18N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 18

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Datasheet

6In Stock

25Expected 11/05/2026

£40.99

£36.46

£33.03

£29.88

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 22

M85049/85-22N02
Amphenol PCD
1: £40.79
3In Stock
25Expected 11/05/2026

Mfr. Part No.
M85049/85-22N02

Mouser Part No
523-85049/85-22N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 22

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Datasheet

3In Stock

25Expected 11/05/2026

£40.79

£36.60

£36.31

£32.79

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 13

M85049/88-13N02
Amphenol PCD
1: £31.45
33In Stock
50Expected 11/05/2026

Mfr. Part No.
M85049/88-13N02

Mouser Part No
523-85049/88-13N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 13

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Datasheet

33In Stock

50Expected 11/05/2026

£31.45

£28.01

£26.87

£24.53

£23.92

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 19

M85049/88-19N02
Amphenol PCD
1: £42.39
35In Stock
125On Order

Mfr. Part No.
M85049/88-19N02

Mouser Part No
523-85049/88-19N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 19

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Datasheet

35In Stock

125On Order

£42.39

£37.73

£34.13

£30.81

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 21

M85049/88-21N03
Amphenol PCD
1: £30.28
3In Stock
350On Order

Mfr. Part No.
M85049/88-21N03

Mouser Part No
523-85049/88-21N03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 21

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Datasheet

3In Stock

350On Order

£30.28

£27.17

£25.31

£23.47

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 25

M85049/88-25N03
Amphenol PCD
1: £34.70
9In Stock
250On Order

Mfr. Part No.
M85049/88-25N03

Mouser Part No
523-85049/88-25N03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 25

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Datasheet

9In Stock

250On Order

£34.70

£29.32

£27.02

£26.33

£26.28

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPT NIC SZ 19

M85049/89-19N02
Amphenol PCD
1: £50.08
19In Stock

Mfr. Part No.
M85049/89-19N02

Mouser Part No
523-85049/89-19N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPT NIC SZ 19

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Datasheet

19In Stock

£50.08

£46.30

£40.28

£38.67

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 89 Backshell Band Lock

M85049/89-9N03
Amphenol PCD
1: £38.69
24In Stock

Mfr. Part No.
M85049/89-9N03

Mouser Part No
523-85049/89-9N03

Amphenol PCD

Circular MIL Spec Backshells 89 Backshell Band Lock

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Datasheet

24In Stock

£38.69

£31.36

£30.98

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A NICKEL

M85049/9-10N
Amphenol PCD
1: £30.82
11In Stock

Mfr. Part No.
M85049/9-10N

Mouser Part No
523-85049/9-10N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A NICKEL

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Datasheet

11In Stock

£30.82

£26.79

£26.14

£25.77

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A NICKEL

M85049/9-16N
Amphenol PCD
1: £33.83
9In Stock
11Expected 13/05/2026

Mfr. Part No.
M85049/9-16N

Mouser Part No
523-85049/9-16N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A NICKEL

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Datasheet

9In Stock

11Expected 13/05/2026

£33.83

£29.41

£28.15

£27.24

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A NICKEL

M85049/9-22N
Amphenol PCD
1: £49.23
1In Stock
18Expected 13/05/2026

Mfr. Part No.
M85049/9-22N

Mouser Part No
523-85049/9-22N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A NICKEL

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Datasheet

1In Stock

18Expected 13/05/2026

£49.23

£42.34

£39.11

£37.00

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A NICKEL

M85049/9-4N
Amphenol PCD
1: £25.91
4In Stock

Mfr. Part No.
M85049/9-4N

Mouser Part No
523-85049/9-4N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A NICKEL

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Datasheet

4In Stock

£25.91

£24.09

£20.46

£20.30

£20.05

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV R/A NICKEL

M85049/9-5N
Amphenol PCD
1: £29.04
6In Stock
25Expected 29/04/2026

Mfr. Part No.
M85049/9-5N

Mouser Part No
523-85049/9-5N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV R/A NICKEL

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Datasheet

6In Stock

25Expected 29/04/2026

£29.04

£25.95

£25.94

£25.66

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 13

M85049/90-13N02
Amphenol PCD
1: £48.57
25In Stock

Mfr. Part No.
M85049/90-13N02

Mouser Part No
523-85049/90-13N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 13

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Datasheet

25In Stock

£48.57

£47.98

£44.11

£41.33

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 15

M85049/90-15N02
Amphenol PCD
1: £44.83
9In Stock

Mfr. Part No.
M85049/90-15N02

Mouser Part No
523-85049/90-15N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 15

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Datasheet

9In Stock

£44.83

£40.36

£39.56

£39.35

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 90 Backshell Band Lock

M85049/90-19N03
Amphenol PCD
1: £56.39
13In Stock
25Expected 11/05/2026

Mfr. Part No.
M85049/90-19N03

Mouser Part No
523-85049/90-19N03

Amphenol PCD

Circular MIL Spec Backshells 90 Backshell Band Lock

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Datasheet

13In Stock

25Expected 11/05/2026

£56.39

£48.71

£45.67

£43.48

£42.30

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 21

M85049/90-21N02
Amphenol PCD
1: £63.95
11In Stock

Mfr. Part No.
M85049/90-21N02

Mouser Part No
523-85049/90-21N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 21

Learn More

Datasheet

11In Stock

£63.95

£58.97

£49.91

£47.05

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 21

M85049/90-21N03
Amphenol PCD
1: £58.65
2In Stock
125On Order

Mfr. Part No.
M85049/90-21N03

Mouser Part No
523-85049/90-21N03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 21

Learn More

Datasheet

2In Stock

125On Order

£58.65

£53.03

£49.44

£44.20

£43.82

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 25

M85049/90-25N03
Amphenol PCD
1: £62.05
5In Stock
50Expected 11/05/2026

Mfr. Part No.
M85049/90-25N03

Mouser Part No
523-85049/90-25N03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 25

Learn More

Datasheet

5In Stock

50Expected 11/05/2026

£62.05

£56.20

£52.98

£50.80

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BShell SRStrt SL ODC SZ09

M85049/124S09W
Amphenol PCD
1: £34.86
9In Stock

Mfr. Part No.
M85049/124S09W

Mouser Part No
523-85049124S09W

Amphenol PCD

Circular MIL Spec Backshells BShell SRStrt SL ODC SZ09

Datasheet

9In Stock

£34.86

£33.24

£28.25

£27.37

£26.57

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BShell SRStrt SL Ni SZ13

M85049/124S13N
Amphenol PCD
1: £35.64
16In Stock

Mfr. Part No.
M85049/124S13N

Mouser Part No
523-85049124S13N

Amphenol PCD

Circular MIL Spec Backshells BShell SRStrt SL Ni SZ13

Datasheet

16In Stock

£35.64

£32.70

£29.49

£27.47

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BShell SRStrt SL Ni SZ17

M85049/124S17N
Amphenol PCD
1: £35.05
25In Stock
25Expected 09/03/2026

Mfr. Part No.
M85049/124S17N

Mouser Part No
523-85049124S17N

Amphenol PCD

Circular MIL Spec Backshells BShell SRStrt SL Ni SZ17

Datasheet

25In Stock

25Expected 09/03/2026

£35.05

£34.92

£31.01

£29.68

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BShell SR 90deg SL Ni SZ09

M85049/126S09N
Amphenol PCD
1: £44.19
23In Stock

Mfr. Part No.
M85049/126S09N

Mouser Part No
523-85049126S09N

Amphenol PCD

Circular MIL Spec Backshells BShell SR 90deg SL Ni SZ09

23In Stock

£44.19

£38.32

£36.85

£35.62

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BShell SR 90deg SL ODC SZ23

M85049/126S23W
Amphenol PCD
1: £57.63
99In Stock

Mfr. Part No.
M85049/126S23W

Mouser Part No
523-85049126S23W

Amphenol PCD

Circular MIL Spec Backshells BShell SR 90deg SL ODC SZ23

99In Stock

£57.63

£52.45

£47.49

£44.98

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 128 Backshell Band

A850491282
Amphenol PCD
1: £11.98
25In Stock

Mfr. Part No.
A850491282

Mouser Part No
523-A850491282

Amphenol PCD

Circular MIL Spec Backshells 128 Backshell Band

25In Stock

£11.98

£11.97

£11.68

Min.: 1
Mult.: 1

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