Circular MIL Spec Connectors

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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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Types of Circular MIL Spec Connectors

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Part #

Circular MIL Spec Backshells BACKSHELL

A850498811Z03
Amphenol PCD
1: ¥8,944.5
25In Stock

Mfr. Part #
A850498811Z03

Mouser Part #
523-A850498811Z03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL

Datasheet

25In Stock

¥8,944.5

¥8,381.4

¥8,228.6

¥8,070.8

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Min.: 1
Mult.: 1

Adapters

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 19

M85049/1919N04
Amphenol PCD
1: ¥9,831.5
26In Stock

Mfr. Part #
M85049/1919N04

Mouser Part #
523-85049/1919N04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 19

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Datasheet

26In Stock

¥9,831.5

¥8,687

¥8,371.4

¥8,117.3

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Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 13

M85049/2113A04
Amphenol PCD
1: ¥6,125.8
25In Stock

Mfr. Part #
M85049/2113A04

Mouser Part #
523-85049/2113A04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 13

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Datasheet

25In Stock

¥6,125.8

¥5,899.9

¥5,898.2

¥5,781.9

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Min.: 1
Mult.: 1

Non-Environmental Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/79-19N03
Amphenol PCD
1: ¥12,389.4
23In Stock

Mfr. Part #
M85049/79-19N03

Mouser Part #
523-85049/79-19N03

Amphenol PCD

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

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Datasheet

23In Stock

¥12,389.4

¥12,035.6

¥12,033.9

¥11,545.6

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Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

90 Deg

Circular MIL Spec Backshells 90 Degrees Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/84-10ZP03
Amphenol PCD
1: ¥14,143.4
18In Stock

Mfr. Part #
M85049/84-10ZP03

Mouser Part #
523-M85049/84-10ZP03

Amphenol PCD

Circular MIL Spec Backshells 90 Degrees Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry 3

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Datasheet

18In Stock

¥14,143.4

¥12,572.1

¥12,288.1

¥11,690.1

View

Min.: 1
Mult.: 1

Band Lock Adapters

MIL-DTL-5015, MIL-DTL-26482 II

90 Deg

Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 1

M85049/85-20ZP01
Amphenol PCD
1: ¥10,841.3
22In Stock

Mfr. Part #
M85049/85-20ZP01

Mouser Part #
523-M85049/85-20ZP01

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 1

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Datasheet

22In Stock

¥10,841.3

¥9,401.3

¥9,187

¥8,258.5

Quote

Min.: 1
Mult.: 1

Band Lock Adapters

MIL-DTL-38999 III, IV

Straight

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

M85049/82-20ZP02
Amphenol PCD
1: ¥11,175.2
21In Stock

Mfr. Part #
M85049/82-20ZP02

Mouser Part #
523-M85049/82-20ZP02

Amphenol PCD

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

Learn More

Datasheet

21In Stock

¥11,175.2

¥9,691.9

¥9,471

¥9,406.2

Quote

Min.: 1
Mult.: 1

Band Lock Adapters

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/82-24ZP03
Amphenol PCD
1: ¥12,530.6
20In Stock

Mfr. Part #
M85049/82-24ZP03

Mouser Part #
523-M85049/82-24ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 3

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Datasheet

20In Stock

¥12,530.6

¥11,138.7

¥10,886.2

¥10,859.6

View

Min.: 1
Mult.: 1

Band Lock Adapters

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-22ZP02
Amphenol PCD
1: ¥11,710.1
24In Stock

Mfr. Part #
M85049/85-22ZP02

Mouser Part #
523-M85049/85-22ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

24In Stock

¥11,710.1

¥10,155.4

¥9,924.5

¥9,442.8

View

Min.: 1
Mult.: 1

Band Lock Adapters

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 10

M85049/10-137N
Amphenol PCD
1: ¥10,120.5
27In Stock

Mfr. Part #
M85049/10-137N

Mouser Part #
523-85049/10-137N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 10

Learn More

Datasheet

27In Stock

¥10,120.5

¥9,613.9

¥9,584

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-71N
Amphenol PCD
1: ¥24,275.5
11In Stock

Mfr. Part #
M85049/11-71N

Mouser Part #
523-85049/11-71N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

Learn More

Datasheet

11In Stock

¥24,275.5

¥22,279

¥21,774

¥21,747.5

View

Min.: 1
Mult.: 1

Environmental Backshells

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 13

M85049/2113N03A
Amphenol PCD
1: ¥6,532.7
24In Stock

Mfr. Part #
M85049/2113N03A

Mouser Part #
523-85049/2113N03A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 13

Learn More

Datasheet

24In Stock

¥6,532.7

¥6,011.2

¥6,009.5

¥5,850

View

Min.: 1
Mult.: 1

Non-Environmental Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

M85049/2125A10
Amphenol PCD
1: ¥10,014.2
20In Stock

Mfr. Part #
M85049/2125A10

Mouser Part #
523-85049/2125A10

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

Learn More

Datasheet

20In Stock

¥10,014.2

¥8,683.7

¥8,486

¥8,077.4

View

Min.: 1
Mult.: 1

Non-Environmental Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

M85049/2125N05
Amphenol PCD
1: ¥6,962.9
26In Stock

Mfr. Part #
M85049/2125N05

Mouser Part #
523-85049/2125N05

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

Learn More

Datasheet

26In Stock

¥6,962.9

¥6,607.5

¥6,594.2

Min.: 1
Mult.: 1

Non-Environmental Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

M85049/11-124N
Amphenol PCD
1: ¥12,043.9
16In Stock

Mfr. Part #
M85049/11-124N

Mouser Part #
523-85049/11-124N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV ST NIC

Learn More

Datasheet

16In Stock

¥12,043.9

¥10,706.8

¥10,464.3

Min.: 1
Mult.: 1

Environmental Backshells

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

M85049/2125N10A
Amphenol PCD
1: ¥8,821.6
25In Stock

Mfr. Part #
M85049/2125N10A

Mouser Part #
523-85049/2125N10A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

Learn More

Datasheet

25In Stock

¥8,821.6

¥8,491

¥8,489.4

View

Min.: 1
Mult.: 1

Non-Environmental Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/25-23N
Amphenol PCD
1: ¥14,628.4
11In Stock

Mfr. Part #
M85049/25-23N

Mouser Part #
523-85049/25-23N

Amphenol PCD

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

Learn More

Datasheet

11In Stock

¥14,628.4

¥13,291.3

¥13,289.7

¥12,960.8

¥12,342.9

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 17

M85049/2117A03A
Amphenol PCD
1: ¥7,771.8
40In Stock

Mfr. Part #
M85049/2117A03A

Mouser Part #
523-85049/2117A03A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 17

Learn More

Datasheet

40In Stock

¥7,771.8

¥6,756.9

¥6,358.3

Min.: 1
Mult.: 1

Non-Environmental Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 19

M85049/2119A05
Amphenol PCD
1: ¥7,989.4
20In Stock

Mfr. Part #
M85049/2119A05

Mouser Part #
523-85049/2119A05

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 19

Learn More

Datasheet

20In Stock

¥7,989.4

¥6,946.3

¥6,537.7

¥6,522.7

View

Min.: 1
Mult.: 1

Non-Environmental Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 19

M85049/2119N05
Amphenol PCD
1: ¥7,080.8
22In Stock

Mfr. Part #
M85049/2119N05

Mouser Part #
523-85049/2119N05

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 19

Learn More

Datasheet

22In Stock

¥7,080.8

¥6,650.6

¥6,649

¥6,300.2

View

Min.: 1
Mult.: 1

Non-Environmental Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/82-20ZP03
Amphenol PCD
1: ¥11,175.2
23In Stock

Mfr. Part #
M85049/82-20ZP03

Mouser Part #
523-M85049/82-20ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 3

Learn More

Datasheet

23In Stock

¥11,175.2

¥9,691.9

¥9,471

¥9,406.2

Quote

Min.: 1
Mult.: 1

Band Lock Adapters

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 1

M85049/85-22ZP01
Amphenol PCD
1: ¥11,710.1
23In Stock

Mfr. Part #
M85049/85-22ZP01

Mouser Part #
523-M85049/85-22ZP01

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 1

Learn More

Datasheet

23In Stock

¥11,710.1

¥10,155.4

¥9,128.9

¥9,127.2

View

Min.: 1
Mult.: 1

Band Lock Adapters

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells 10 Backshell Env-EMI/RFI

M85049/10-21N
Amphenol PCD
1: ¥13,636.8
17In Stock

Mfr. Part #
M85049/10-21N

Mouser Part #
523-85049/10-21N

Amphenol PCD

Circular MIL Spec Backshells 10 Backshell Env-EMI/RFI

Learn More

Datasheet

17In Stock

¥13,636.8

¥12,007.4

¥12,005.7

Quote

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 21

M85049/10-22N
Amphenol PCD
1: ¥13,819.5
11In Stock

Mfr. Part #
M85049/10-22N

Mouser Part #
523-85049/10-22N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 21

Learn More

Datasheet

11In Stock

¥13,819.5

¥12,284.8

¥12,005.7

¥11,426

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-34W
Amphenol PCD
1: ¥13,083.7
26In Stock

Mfr. Part #
M85049/11-34W

Mouser Part #
523-85049/11-34W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Learn More

Datasheet

26In Stock

¥13,083.7

¥11,779.8

¥11,248.3

¥10,954.3

Min.: 1
Mult.: 1

Environmental Backshells

MIL-DTL-5015, MIL-DTL-26482 II

Straight

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