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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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RoHS Compliant

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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: ¥14,641.7
53In Stock

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

53In Stock

¥14,641.7

¥12,746.5

¥10,886.2

¥10,578.9

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: ¥11,899.4
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

¥11,899.4

¥9,025.9

¥8,846.5

¥8,725.2

View

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: ¥12,738.2
29In 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

29In Stock

¥12,738.2

¥11,030.7

¥8,748.5

Quote

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: ¥9,587.3
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

¥9,587.3

¥8,230.3

¥7,607.4

¥7,404.7

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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: ¥10,419.5
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

¥10,419.5

¥10,412.8

¥7,896.4

¥7,894.7

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: ¥10,050.7
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

¥10,050.7

¥8,715.3

¥7,996.1

¥7,937.9

Quote

Min.: 1
Mult.: 1

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

M85049/82-12ZP02
Amphenol PCD
1: ¥11,112.1
15In Stock

Mfr. Part #
M85049/82-12ZP02

Mouser Part #
523-M85049/82-12ZP02

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

Datasheet

15In Stock

¥11,112.1

¥8,261.8

¥8,034.3

View

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: ¥10,185.3
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

¥10,185.3

¥9,542.4

¥7,667.2

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: ¥11,455.9
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

¥11,455.9

¥7,937.9

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: ¥11,901.1
11In 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

11In Stock

¥11,901.1

¥11,894.4

¥8,841.5

¥8,711.9

View

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: ¥14,415.8
5In 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

5In Stock

¥14,415.8

¥12,490.7

¥10,716.8

¥10,439.4

View

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: ¥10,225.1
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

¥10,225.1

¥9,050.8

¥7,600.7

¥7,243.6

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: ¥12,308
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

¥12,308

¥8,477.7

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: ¥10,622.1
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

¥10,622.1

¥7,406.4

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: ¥14,415.8
4In 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

4In Stock

¥14,415.8

¥12,490.7

¥9,794.9

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: ¥11,112.1
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

¥11,112.1

¥9,673.7

¥7,720.3

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: ¥9,846.4
8In Stock
25Expected 7/28/2026

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 7/28/2026

¥9,846.4

¥8,657.1

¥6,911.4

Quote

Min.: 1
Mult.: 1

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

M85049/87-10ZP03
Amphenol PCD
1: ¥14,143.4
23In Stock

Mfr. Part #
M85049/87-10ZP03

Mouser Part #
523-M85049/87-10ZP03

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

Datasheet

23In Stock

¥14,143.4

¥12,572.1

¥12,288.1

¥11,892.8

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 20

M85049/10-31N
Amphenol PCD
1: ¥15,272.9
50In Stock

Mfr. Part #
M85049/10-31N

Mouser Part #
523-85049/10-31N

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 20

Datasheet

50In Stock

¥15,272.9

¥15,150

¥12,389.4

¥11,037.3

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 12

M85049/84-12N03
Amphenol PCD
1: ¥11,743.3
55In Stock

Mfr. Part #
M85049/84-12N03

Mouser Part #
523-85049/84-12N03

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 12

Datasheet

55In Stock

¥11,743.3

¥10,148.7

¥9,047.5

¥8,884.7

View

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: ¥9,097.3
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

¥9,097.3

¥7,888.1

¥7,265.2

¥7,246.9

View

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: ¥10,798.2
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

¥10,798.2

¥9,364.7

¥9,152.1

¥8,833.2

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: ¥12,087.1
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

¥12,087.1

¥12,063.8

¥8,497.7

¥8,477.7

Min.: 1
Mult.: 1

Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/82-22ZP03
Amphenol PCD
1: ¥13,407.6
18In Stock

Mfr. Part #
M85049/82-22ZP03

Mouser Part #
523-M85049/82-22ZP03

Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 3

Datasheet

18In Stock

¥13,407.6

¥13,387.7

¥9,333.2

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: ¥11,980.8
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

¥11,980.8

¥10,389.6

¥10,153.7

¥9,854.7

Quote

Min.: 1
Mult.: 1