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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 BACKSHELL GRMT NUT ST SL OD CAD SZ 18

M85049/31S18W
Amphenol PCD
1: 20,48 €
49On Order

Mfr. Part No.
M85049/31S18W

Mouser Part No
523-85049/31S18W

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL OD CAD SZ 18

Datasheet

49On Order

20,48 €

17,41 €

17,36 €

16,80 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

M85049/6-59W
Amphenol PCD
1: 58,66 €
14Expected 9/29/2026

Mfr. Part No.
M85049/6-59W

Mouser Part No
523-85049/6-59W

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

Datasheet

14Expected 9/29/2026

58,66 €

55,41 €

55,40 €

54,87 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 7 Backshell Env

M85049/7-57W
Amphenol PCD
1: 37,10 €
19Expected 10/28/2026

Mfr. Part No.
M85049/7-57W

Mouser Part No
523-85049/7-57W

Circular MIL Spec Backshells 7 Backshell Env

Datasheet

19Expected 10/28/2026

37,10 €

36,97 €

36,96 €

34,99 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 8 Backshell Env-EMI/RFI

M85049/8-12W
Amphenol PCD
1: 48,98 €
25Expected 9/8/2026

Mfr. Part No.
M85049/8-12W

Mouser Part No
523-85049/8-12W

Circular MIL Spec Backshells 8 Backshell Env-EMI/RFI

Datasheet

25Expected 9/8/2026

48,98 €

40,63 €

38,42 €

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD

M85049/8-15W
Amphenol PCD
1: 48,93 €
20Expected 9/18/2026

Mfr. Part No.
M85049/8-15W

Mouser Part No
523-85049/8-15W

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD

Datasheet

20Expected 9/18/2026

48,93 €

48,03 €

46,99 €

46,25 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD

M85049/8-20W
Amphenol PCD
1: 66,54 €
22Expected 9/28/2026

Mfr. Part No.
M85049/8-20W

Mouser Part No
523-85049/8-20W

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD

Datasheet

22Expected 9/28/2026

66,54 €

56,56 €

53,02 €

50,49 €

48,08 €

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD

M85049/8-9N
Amphenol PCD
1: 42,66 €
5Expected 11/9/2026

Mfr. Part No.
M85049/8-9N

Mouser Part No
523-85049/8-9N

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A OD CAD

Datasheet

5Expected 11/9/2026

42,66 €

39,84 €

39,27 €

35,64 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST CAD SZ 24

M85049/82-24W03
Amphenol PCD
1: 56,24 €
25Expected 9/18/2026

Mfr. Part No.
M85049/82-24W03

Mouser Part No
523-85049/82-24W03

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST CAD SZ 24

Datasheet

25Expected 9/18/2026

56,24 €

48,28 €

45,37 €

43,21 €

41,14 €

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST CAD SZ 28

M85049/82-28W02
Amphenol PCD
1: 53,52 €
18Expected 11/24/2026

Mfr. Part No.
M85049/82-28W02

Mouser Part No
523-85049/82-28W02

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST CAD SZ 28

Datasheet

18Expected 11/24/2026

53,52 €

50,22 €

49,51 €

45,57 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 84 Backshell Band Lock

M85049/84-16W03
Amphenol PCD
1: 70,09 €
15Expected 10/29/2026

Mfr. Part No.
M85049/84-16W03

Mouser Part No
523-85049/84-16W03

Circular MIL Spec Backshells 84 Backshell Band Lock

Datasheet

15Expected 10/29/2026

70,09 €

62,31 €

60,89 €

57,61 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST CAD SZ 16

M85049/85-16W01
Amphenol PCD
1: 44,98 €
15Expected 11/13/2026

Mfr. Part No.
M85049/85-16W01

Mouser Part No
523-85049/85-16W01

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST CAD SZ 16

Datasheet

15Expected 11/13/2026

44,98 €

39,10 €

36,80 €

36,45 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST CAD SZ 24

M85049/85-24W02
Amphenol PCD
1: 60,21 €
25Expected 9/29/2026

Mfr. Part No.
M85049/85-24W02

Mouser Part No
523-85049/85-24W02

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST CAD SZ 24

Datasheet

25Expected 9/29/2026

60,21 €

54,92 €

52,43 €

47,01 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPTR CAD SZ 22

M85049/86-22W02
Amphenol PCD
1: 61,36 €
20Expected 10/13/2026

Mfr. Part No.
M85049/86-22W02

Mouser Part No
523-85049/86-22W02

Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPTR CAD SZ 22

Datasheet

20Expected 10/13/2026

61,36 €

56,51 €

56,44 €

56,24 €

View

Min.: 1
Mult.: 1

No

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

M85049/87-12W02
Amphenol PCD
1: 65,18 €
11On Order

Mfr. Part No.
M85049/87-12W02

Mouser Part No
523-85049/87-12W02

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

Datasheet

11On Order

65,18 €

57,95 €

56,63 €

53,94 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-12W
Amphenol PCD
1: 73,00 €
24Expected 9/18/2026

Mfr. Part No.
M85049/9-12W

Mouser Part No
523-85049/9-12W

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

Datasheet

24Expected 9/18/2026

73,00 €

68,28 €

51,27 €

49,81 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 9 Backshell Env

M85049/9-19W
Amphenol PCD
1: 39,18 €
17Expected 11/24/2026

Mfr. Part No.
M85049/9-19W

Mouser Part No
523-85049/9-19W

Circular MIL Spec Backshells 9 Backshell Env

Datasheet

17Expected 11/24/2026

39,18 €

39,17 €

38,17 €

37,81 €

Quote

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

M85049/9-57W
Amphenol PCD
1: 40,14 €
23Expected 9/29/2026

Mfr. Part No.
M85049/9-57W

Mouser Part No
523-85049/9-57W

Circular MIL Spec Backshells BACKSHELL ENV R/A OD CAD

Datasheet

23Expected 9/29/2026

40,14 €

39,75 €

37,09 €

35,89 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 9 Backshell Env

M85049/9-9W
Amphenol PCD
1: 38,24 €
22Expected 11/25/2026

Mfr. Part No.
M85049/9-9W

Mouser Part No
523-85049/9-9W

Circular MIL Spec Backshells 9 Backshell Env

Datasheet

22Expected 11/25/2026

38,24 €

32,51 €

31,78 €

30,34 €

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL

M85049/1821Z07
Amphenol PCD
1: 75,46 €
11Expected 10/2/2026

Mfr. Part No.
M85049/1821Z07

Mouser Part No
523-M850491821Z07

Circular MIL Spec Backshells BACKSHELL

Datasheet

11Expected 10/2/2026

75,46 €

67,07 €

View

Min.: 1
Mult.: 1

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

M85049/1911Z03
Amphenol PCD
1: 58,89 €
25Expected 11/25/2026

Mfr. Part No.
M85049/1911Z03

Mouser Part No
523-M850491911Z03

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

Datasheet

25Expected 11/25/2026

58,89 €

53,68 €

50,40 €

View

Min.: 1
Mult.: 1

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

M85049/1913Z04
Amphenol PCD
1: 61,01 €
25Expected 11/26/2026

Mfr. Part No.
M85049/1913Z04

Mouser Part No
523-M850491913Z04

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

Datasheet

25Expected 11/26/2026

61,01 €

52,90 €

47,53 €

Min.: 1
Mult.: 1

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

M85049/79-13Z03
Amphenol PCD
1: 76,99 €
18Expected 9/11/2026

Mfr. Part No.
M85049/79-13Z03

Mouser Part No
523-M8504979-13Z03

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

Datasheet

18Expected 9/11/2026

76,99 €

72,82 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Tools, Hardware & Accessories Strain Relief Clamp Shell Size 24

MS27291-15
Amphenol PCD
1: 29,15 €
25Expected 9/8/2026

Mfr. Part No.
MS27291-15

Mouser Part No
523-MS27291-15

Circular MIL Spec Tools, Hardware & Accessories Strain Relief Clamp Shell Size 24

Datasheet

25Expected 9/8/2026

29,15 €

24,77 €

23,52 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells M85049/10-05N

A850491005N
Amphenol PCD
1: 62,44 €
15Expected 10/13/2026

Mfr. Part No.
A850491005N

Mouser Part No
523-A850491005N

Circular MIL Spec Backshells M85049/10-05N

15Expected 10/13/2026

62,44 €

54,15 €

52,92 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells M85049/47W22

A8504947W22
Amphenol PCD
1: 20,56 €
23Expected 9/11/2026

Mfr. Part No.
A8504947W22

Mouser Part No
523-A8504947W22

Circular MIL Spec Backshells M85049/47W22

23Expected 9/11/2026

20,56 €

17,48 €

16,13 €

15,93 €

Min.: 1
Mult.: 1