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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 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-16ZP02
Amphenol PCD
1: $99.32
16In Stock
25Expected 2026-05-28

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

16In Stock

25Expected 2026-05-28

$99.32

$68.82

$68.70

$68.23

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-20ZP02
Amphenol PCD
1: $107.15
8In Stock

Mfr. Part #
M85049/85-20ZP02

Mouser Part #
523-M85049/85-20ZP02

Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 2

Datasheet

8In Stock

$107.15

$93.28

$73.76

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: $85.52
17In 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

17In Stock

$85.52

$80.15

$64.21

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

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: $126.92
3In Stock
25Expected 2026-06-17

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

3In Stock

25Expected 2026-06-17

$126.92

$86.13

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: $124.96
18In 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

18In Stock

$124.96

$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: $110.45
21In Stock

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

21In Stock

$110.45

$75.84

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

$66.93

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
11In Stock

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

11In Stock

$85.36

$59.92

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

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 1

M85049/85-24ZP01
Amphenol PCD
1: $124.96
15In Stock

Mfr. Part #
M85049/85-24ZP01

Mouser Part #
523-M85049/85-24ZP01

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 1

Datasheet

15In Stock

$124.96

$84.92

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: $106.72
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

$106.72

$73.50

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

$78.47

$62.02

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: $106.72
18In 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

18In Stock

$106.72

$73.50

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/88-25ZP03
Amphenol PCD
1: $126.92
11In Stock

Mfr. Part #
M85049/88-25ZP03

Mouser Part #
523-M85049/88-25ZP03

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 3

Datasheet

11In Stock

$126.92

$86.13

Min.: 1
Mult.: 1

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

M85049/1813N03
Amphenol PCD
1: $67.52
213In Stock

Mfr. Part #
M85049/1813N03

Mouser Part #
523-85049/1813N03

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

Datasheet

213In Stock

$67.52

$67.16

$66.36

$54.49

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 84 Backshell Band Lock

M85049/84-24N03
Amphenol PCD
1: $138.69
20In Stock

Mfr. Part #
M85049/84-24N03

Mouser Part #
523-85049/84-24N03

Circular MIL Spec Backshells 84 Backshell Band Lock

Datasheet

20In Stock

$138.69

$130.97

$125.14

$108.99

View

Min.: 1
Mult.: 1

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

M85049/1823N04
Amphenol PCD
1: $96.28
32In Stock

Mfr. Part #
M85049/1823N04

Mouser Part #
523-85049/1823N04

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

Datasheet

32In Stock

$96.28

$92.10

$88.44

$74.32

Min.: 1
Mult.: 1

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

M85049/79-11N02
Amphenol PCD
1: $80.41
44In Stock

Mfr. Part #
M85049/79-11N02

Mouser Part #
523-85049/79-11N02

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

Datasheet

44In Stock

$80.41

$78.45

$66.86

Quote

Min.: 1
Mult.: 1

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

M85049/79-19N03
Amphenol PCD
1: $89.05
23In Stock

Mfr. Part #
M85049/79-19N03

Mouser Part #
523-85049/79-19N03

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

Datasheet

23In Stock

$89.05

$86.88

$73.99

Quote

Min.: 1
Mult.: 1

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

M85049/82-20N03
Amphenol PCD
1: $66.76
53In Stock

Mfr. Part #
M85049/82-20N03

Mouser Part #
523-85049/82-20N03

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

Datasheet

53In Stock

$66.76

$56.40

$55.74

$55.73

View

Min.: 1
Mult.: 1

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

M85049/89-15N02
Amphenol PCD
1: $76.20
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

$76.20

$72.89

$66.08

$55.21

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 23

M85049/90-23N03
Amphenol PCD
1: $82.04
62In Stock

Mfr. Part #
M85049/90-23N03

Mouser Part #
523-85049/90-23N03

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 23

Datasheet

62In Stock

$82.04

$73.14

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 62GB Connector

AIA500112000010AA04
Amphenol LTD
1: $200.51
15In Stock

Mfr. Part #
AIA500112000010AA04

Mouser Part #
523-AIA500112010AA04

Circular MIL Spec Backshells 62GB Connector

Datasheet

15In Stock

$200.51

$191.75

$181.05

$170.31

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 62GB

62GB5851007S
Amphenol LTD
1: $34.52
94In Stock

Mfr. Part #
62GB5851007S

Mouser Part #
523-62GB5851007S

Circular MIL Spec Backshells 62GB

Datasheet

94In Stock

$34.52

$29.33

$27.50

$26.18

View

Min.: 1
Mult.: 1