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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 Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-25ZP02
Amphenol PCD
1: €75.81
28In Stock
25Expected 28/07/2026

Mfr. Part No.
M85049/88-25ZP02

Mouser Part No
523-M85049/88-25ZP02

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

28In Stock

25Expected 28/07/2026

€75.81

€66.00

€56.36

€54.77

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-18ZP02
Amphenol PCD
1: €60.62
31In Stock

Mfr. Part No.
M85049/85-18ZP02

Mouser Part No
523-M85049/85-18ZP02

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

31In Stock

€60.62

€60.49

€43.07

€42.60

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

M85049/82-10ZP03
Amphenol PCD
1: €49.64
34In Stock

Mfr. Part No.
M85049/82-10ZP03

Mouser Part No
523-M85049/82-10ZP03

Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

Datasheet

34In Stock

€49.64

€42.61

€39.34

€38.34

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 1

M85049/85-12ZP01
Amphenol PCD
1: €54.06
40In Stock

Mfr. Part No.
M85049/85-12ZP01

Mouser Part No
523-M85049/85-12ZP01

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 1

Datasheet

40In Stock

€54.06

€54.05

€40.88

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-16ZP02
Amphenol PCD
1: €58.51
38In Stock

Mfr. Part No.
M85049/85-16ZP02

Mouser Part No
523-M85049/85-16ZP02

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

38In Stock

€58.51

€58.37

€41.10

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Backshell;Env-EMI/RFI;BZN

M85049/1825Z10
Amphenol PCD
1: €79.55
224In Stock

Mfr. Part No.
M85049/1825Z10

Mouser Part No
523-M850491825Z10

Circular MIL Spec Backshells Backshell;Env-EMI/RFI;BZN

Datasheet

224In Stock

€79.55

€77.38

€75.38

€74.24

€71.98

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-24ZP02
Amphenol PCD
1: €74.64
4In Stock

Mfr. Part No.
M85049/85-24ZP02

Mouser Part No
523-M85049/85-24ZP02

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

4In Stock

€74.64

€64.67

€50.71

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 21 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-21ZP02
Amphenol PCD
1: €65.95
7In Stock
25Expected 11/08/2026

Mfr. Part No.
M85049/88-21ZP02

Mouser Part No
523-M85049/88-21ZP02

Circular MIL Spec Backshells Straight Shell size 21 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

7In Stock

25Expected 11/08/2026

€65.95

€57.11

€45.30

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 14 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-14ZP02
Amphenol PCD
1: €52.74
25In Stock

Mfr. Part No.
M85049/85-14ZP02

Mouser Part No
523-M85049/85-14ZP02

Circular MIL Spec Backshells Straight Shell size 14 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

25In Stock

€52.74

€49.41

€39.70

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 1

M85049/85-16ZP01
Amphenol PCD
1: €59.31
15In Stock

Mfr. Part No.
M85049/85-16ZP01

Mouser Part No
523-M85049/85-16ZP01

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 1

Datasheet

15In Stock

€59.31

€41.10

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

M85049/85-10ZP02
Amphenol PCD
1: €52.94
6In Stock

Mfr. Part No.
M85049/85-10ZP02

Mouser Part No
523-M85049/85-10ZP02

Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

Datasheet

6In Stock

€52.94

€46.56

€37.04

€36.93

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 19 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-19ZP02
Amphenol PCD
1: €63.73
16In Stock

Mfr. Part No.
M85049/88-19ZP02

Mouser Part No
523-M85049/88-19ZP02

Circular MIL Spec Backshells Straight Shell size 19 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

16In Stock

€63.73

€43.89

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

M85049/82-12ZP03
Amphenol PCD
1: €57.53
9In Stock

Mfr. Part No.
M85049/82-12ZP03

Mouser Part No
523-M85049/82-12ZP03

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

Datasheet

9In Stock

€57.53

€50.09

€39.97

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

M85049/85-08ZP02
Amphenol PCD
1: €50.98
8In Stock
25Expected 28/07/2026

Mfr. Part No.
M85049/85-08ZP02

Mouser Part No
523-M85049/85-08ZP02

Circular MIL Spec Backshells Straight Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

Datasheet

8In Stock

25Expected 28/07/2026

€50.98

€44.82

€35.78

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-12ZP02
Amphenol PCD
1: €55.00
15In Stock

Mfr. Part No.
M85049/85-12ZP02

Mouser Part No
523-M85049/85-12ZP02

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

15In Stock

€55.00

€38.35

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/82-16ZP02
Amphenol PCD
1: €61.58
13In Stock

Mfr. Part No.
M85049/82-16ZP02

Mouser Part No
523-M85049/82-16ZP02

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

13In Stock

€61.58

€42.54

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

M85049/82-08ZP03
Amphenol PCD
1: €52.91
28In Stock

Mfr. Part No.
M85049/82-08ZP03

Mouser Part No
523-M85049/82-08ZP03

Circular MIL Spec Backshells Straight Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

Datasheet

28In Stock

€52.91

€46.44

€37.55

€37.52

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/82-18ZP02
Amphenol PCD
1: €55.91
15In Stock

Mfr. Part No.
M85049/82-18ZP02

Mouser Part No
523-M85049/82-18ZP02

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

15In Stock

€55.91

€48.49

€47.39

€42.59

€41.37

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/82-18ZP03
Amphenol PCD
1: €62.68
32In Stock

Mfr. Part No.
M85049/82-18ZP03

Mouser Part No
523-M85049/82-18ZP03

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 3

Datasheet

32In Stock

€62.68

€62.59

€44.23

€43.89

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 23 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/88-23ZP03
Amphenol PCD
1: €69.51
16In Stock

Mfr. Part No.
M85049/88-23ZP03

Mouser Part No
523-M85049/88-23ZP03

Circular MIL Spec Backshells Straight Shell size 23 Black Zinc Nickel w/ Exposed Nickel Entry 3

Datasheet

16In Stock

€69.51

€69.32

€48.32

Min.: 1
Mult.: 1

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

M85049/1923N07
Amphenol PCD
1: €55.72
43In Stock

Mfr. Part No.
M85049/1923N07

Mouser Part No
523-85049/1923N07

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

Datasheet

43In Stock

€55.72

€53.04

€49.94

€49.55

Min.: 1
Mult.: 1

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

M85049/79-11N02
Amphenol PCD
1: €67.05
40In Stock

Mfr. Part No.
M85049/79-11N02

Mouser Part No
523-85049/79-11N02

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

Datasheet

40In Stock

€67.05

€57.00

€53.44

€50.89

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPT NIC SZ 15

M85049/89-15N02
Amphenol PCD
1: €49.65
35In Stock

Mfr. Part No.
M85049/89-15N02

Mouser Part No
523-85049/89-15N02

Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPT NIC SZ 15

Datasheet

35In Stock

€49.65

€44.46

€42.52

€40.49

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 90 Degrees Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/84-8ZP03
Amphenol PCD
1: €81.24
25In Stock

Mfr. Part No.
M85049/84-8ZP03

Mouser Part No
523-M85049/84-8ZP03

Circular MIL Spec Backshells 90 Degrees Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry 3

Datasheet

25In Stock

€81.24

€81.05

€56.21

€55.62

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 14 Black Zinc Nickel w/ Exposed Nickel Entry 1

M85049/85-14ZP01
Amphenol PCD
1: €56.18
47In Stock

Mfr. Part No.
M85049/85-14ZP01

Mouser Part No
523-M85049/85-14ZP01

Circular MIL Spec Backshells Straight Shell size 14 Black Zinc Nickel w/ Exposed Nickel Entry 1

Datasheet

47In Stock

€56.18

€56.09

€39.96

€39.70

Min.: 1
Mult.: 1