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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 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

M85049/82-10ZP03
Amphenol PCD
1: $83.12
34In Stock

Mfr. Part #
M85049/82-10ZP03

Mouser Part #
523-M85049/82-10ZP03

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

Datasheet

34In Stock

$83.12

$71.35

$65.87

$64.20

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: $90.52
40In Stock

Mfr. Part #
M85049/85-12ZP01

Mouser Part #
523-M85049/85-12ZP01

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

Datasheet

40In Stock

$90.52

$90.50

$68.46

$68.44

Quote

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: $101.51
31In Stock

Mfr. Part #
M85049/85-18ZP02

Mouser Part #
523-M85049/85-18ZP02

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

Datasheet

31In Stock

$101.51

$101.29

$72.12

$71.34

Min.: 1
Mult.: 1

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

M85049/88-25ZP02
Amphenol PCD
1: $126.94
28In Stock
25Expected 2026-07-28

Mfr. Part #
M85049/88-25ZP02

Mouser Part #
523-M85049/88-25ZP02

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

Datasheet

28In Stock

25Expected 2026-07-28

$126.94

$110.51

$94.38

$91.71

View

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: $98.41
38In Stock

Mfr. Part #
M85049/85-16ZP02

Mouser Part #
523-M85049/85-16ZP02

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

Datasheet

38In Stock

$98.41

$98.28

$68.82

Quote

Min.: 1
Mult.: 1

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

M85049/1825Z10
Amphenol PCD
1: $133.20
224In Stock

Mfr. Part #
M85049/1825Z10

Mouser Part #
523-M850491825Z10

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

Datasheet

224In Stock

$133.20

$129.57

$126.22

$124.32

$120.53

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: $88.65
6In Stock

Mfr. Part #
M85049/85-10ZP02

Mouser Part #
523-M85049/85-10ZP02

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

Datasheet

6In Stock

$88.65

$77.96

$62.02

$61.83

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: $106.70
16In Stock

Mfr. Part #
M85049/88-19ZP02

Mouser Part #
523-M85049/88-19ZP02

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

Datasheet

16In Stock

$106.70

$73.50

Quote

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: $124.98
8In Stock

Mfr. Part #
M85049/85-24ZP02

Mouser Part #
523-M85049/85-24ZP02

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

Datasheet

8In Stock

$124.98

$108.29

$84.92

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: $110.43
7In Stock
25Expected 2026-08-11

Mfr. Part #
M85049/88-21ZP02

Mouser Part #
523-M85049/88-21ZP02

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

Datasheet

7In Stock

25Expected 2026-08-11

$110.43

$95.63

$75.84

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: $92.09
15In Stock

Mfr. Part #
M85049/85-12ZP02

Mouser Part #
523-M85049/85-12ZP02

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

Datasheet

15In Stock

$92.09

$64.21

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: $88.59
28In Stock

Mfr. Part #
M85049/82-08ZP03

Mouser Part #
523-M85049/82-08ZP03

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

Datasheet

28In Stock

$88.59

$77.76

$62.87

$62.83

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: $93.61
15In Stock

Mfr. Part #
M85049/82-18ZP02

Mouser Part #
523-M85049/82-18ZP02

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

Datasheet

15In Stock

$93.61

$81.19

$79.34

$71.31

Quote

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: $104.95
32In Stock

Mfr. Part #
M85049/82-18ZP03

Mouser Part #
523-M85049/82-18ZP03

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

Datasheet

32In Stock

$104.95

$104.80

$74.06

$73.50

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: $116.40
16In Stock

Mfr. Part #
M85049/88-23ZP03

Mouser Part #
523-M85049/88-23ZP03

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

Datasheet

16In Stock

$116.40

$116.08

$80.91

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: $96.34
9In Stock

Mfr. Part #
M85049/82-12ZP03

Mouser Part #
523-M85049/82-12ZP03

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

Datasheet

9In Stock

$96.34

$83.87

$66.93

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: $85.36
8In Stock
25Expected 2026-07-28

Mfr. Part #
M85049/85-08ZP02

Mouser Part #
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 2026-07-28

$85.36

$75.05

$59.92

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: $88.30
25In Stock

Mfr. Part #
M85049/85-14ZP02

Mouser Part #
523-M85049/85-14ZP02

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

Datasheet

25In Stock

$88.30

$82.73

$66.47

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: $99.32
15In Stock

Mfr. Part #
M85049/85-16ZP01

Mouser Part #
523-M85049/85-16ZP01

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

Datasheet

15In Stock

$99.32

$68.82

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: $103.12
13In Stock

Mfr. Part #
M85049/82-16ZP02

Mouser Part #
523-M85049/82-16ZP02

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

Datasheet

13In Stock

$103.12

$71.22

Quote

Min.: 1
Mult.: 1

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

M85049/1923N07
Amphenol PCD
1: $93.30
43In Stock

Mfr. Part #
M85049/1923N07

Mouser Part #
523-85049/1923N07

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

Datasheet

43In Stock

$93.30

$88.80

$83.62

$82.97

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 20

M85049/82-20N03
Amphenol PCD
1: $69.60
43In Stock
25Expected 2026-09-04

Mfr. Part #
M85049/82-20N03

Mouser Part #
523-85049/82-20N03

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 20

Datasheet

43In Stock

25Expected 2026-09-04

$69.60

$58.97

$58.58

$57.14

View

Min.: 1
Mult.: 1

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

M85049/89-15N02
Amphenol PCD
1: $83.13
35In Stock

Mfr. Part #
M85049/89-15N02

Mouser Part #
523-85049/89-15N02

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

Datasheet

35In Stock

$83.13

$74.45

$71.19

$67.80

Min.: 1
Mult.: 1

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

M85049/87-08ZP03
Amphenol PCD
1: $136.94
25In Stock

Mfr. Part #
M85049/87-08ZP03

Mouser Part #
523-M85049/87-08ZP03

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

Datasheet

25In Stock

$136.94

$136.74

$97.07

$93.08

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 9

M85049/78-09N02
Amphenol PCD
1: $101.92
27In Stock

Mfr. Part #
M85049/78-09N02

Mouser Part #
523-85049/78-09N02

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 9

Datasheet

27In Stock

$101.92

$87.70

$80.94

$78.35

$74.62

Min.: 1
Mult.: 1