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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 ENV EMI/ RFI ST NIC SZ 15

M85049/1815N04B
Amphenol PCD
1: 65,88 €
21Expected 11/11/2026

Mfr. Part No.
M85049/1815N04B

Mouser Part No
523-85049/1815N04B

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 15

Datasheet

21Expected 11/11/2026

65,88 €

46,55 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1821N03
Amphenol PCD
1: 61,65 €
15Expected 8/25/2026

Mfr. Part No.
M85049/1821N03

Mouser Part No
523-85049/1821N03

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

15Expected 8/25/2026

61,65 €

50,38 €

48,82 €

46,79 €

44,55 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 11

M85049/2111A02A
Amphenol PCD
1: 32,89 €
25Expected 9/28/2026

Mfr. Part No.
M85049/2111A02A

Mouser Part No
523-85049/2111A02A

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 11

Datasheet

25Expected 9/28/2026

32,89 €

30,26 €

30,25 €

30,03 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 13

M85049/2113A03
Amphenol PCD
1: 31,14 €
25Expected 9/18/2026

Mfr. Part No.
M85049/2113A03

Mouser Part No
523-85049/2113A03

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 13

Datasheet

25Expected 9/18/2026

31,14 €

29,61 €

29,60 €

29,30 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 21

M85049/2121A06
Amphenol PCD
1: 38,96 €
25Expected 10/13/2026

Mfr. Part No.
M85049/2121A06

Mouser Part No
523-85049/2121A06

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 21

Datasheet

25Expected 10/13/2026

38,96 €

35,85 €

35,84 €

35,58 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 21

M85049/2121A08
Amphenol PCD
1: 46,48 €
13Expected 9/18/2026

Mfr. Part No.
M85049/2121A08

Mouser Part No
523-85049/2121A08

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 21

Datasheet

13Expected 9/18/2026

46,48 €

40,41 €

38,03 €

37,48 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 31 Backshell Grommet Nut

M85049/31-10N
Amphenol PCD
1: 11,79 €
23On Order

Mfr. Part No.
M85049/31-10N

Mouser Part No
523-85049/31-10N

Circular MIL Spec Backshells 31 Backshell Grommet Nut

Datasheet

23On Order

11,79 €

10,03 €

9,39 €

8,95 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 16

M85049/31-16N
Amphenol PCD
1: 12,90 €
9Expected 10/27/2026

Mfr. Part No.
M85049/31-16N

Mouser Part No
523-85049/31-16N

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 16

Datasheet

9Expected 10/27/2026

12,90 €

11,44 €

9,14 €

8,84 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 20

M85049/31-20N
Amphenol PCD
1: 12,91 €
50Expected 11/25/2026

Mfr. Part No.
M85049/31-20N

Mouser Part No
523-85049/31-20N

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 20

Datasheet

50Expected 11/25/2026

12,91 €

10,97 €

10,28 €

9,79 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 22

M85049/31-22N
Amphenol PCD
1: 15,59 €
25Expected 11/26/2026

Mfr. Part No.
M85049/31-22N

Mouser Part No
523-85049/31-22N

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 22

Datasheet

25Expected 11/26/2026

15,59 €

15,07 €

15,06 €

10,59 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NICKEL

M85049/6-7N
Amphenol PCD
1: 52,80 €
25Expected 11/26/2026

Mfr. Part No.
M85049/6-7N

Mouser Part No
523-85049/6-7N

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NICKEL

Datasheet

25Expected 11/26/2026

52,80 €

43,12 €

38,68 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 09

M85049/6-9N
Amphenol PCD
1: 44,10 €
15Expected 11/25/2026

Mfr. Part No.
M85049/6-9N

Mouser Part No
523-85049/6-9N

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 09

Datasheet

15Expected 11/25/2026

44,10 €

40,08 €

40,03 €

38,41 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 17

M85049/78-17N03
Amphenol PCD
1: 63,77 €
19Expected 9/18/2026

Mfr. Part No.
M85049/78-17N03

Mouser Part No
523-85049/78-17N03

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 17

Datasheet

19Expected 9/18/2026

63,77 €

58,71 €

53,35 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 15

M85049/79-15N02
Amphenol PCD
1: 61,35 €
15Expected 10/8/2026

Mfr. Part No.
M85049/79-15N02

Mouser Part No
523-85049/79-15N02

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 15

Datasheet

15Expected 10/8/2026

61,35 €

58,35 €

58,34 €

52,57 €

Quote

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 15

M85049/79-15N03
Amphenol PCD
1: 69,16 €
10Expected 9/29/2026

Mfr. Part No.
M85049/79-15N03

Mouser Part No
523-85049/79-15N03

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 15

Datasheet

10Expected 9/29/2026

69,16 €

61,48 €

60,08 €

57,18 €

View

Min.: 1
Mult.: 1

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

M85049/8-10N
Amphenol PCD
1: 48,18 €
19Expected 11/3/2026

Mfr. Part No.
M85049/8-10N

Mouser Part No
523-85049/8-10N

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

Datasheet

19Expected 11/3/2026

48,18 €

41,36 €

39,13 €

37,26 €

View

Min.: 1
Mult.: 1

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

M85049/8-6N
Amphenol PCD
1: 47,31 €
11Expected 11/9/2026

Mfr. Part No.
M85049/8-6N

Mouser Part No
523-85049/8-6N

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

Datasheet

11Expected 11/9/2026

47,31 €

38,72 €

38,71 €

38,25 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 8 Backshell Env-EMI/RFI

M85049/8-7W
Amphenol PCD
1: 42,90 €
23Expected 10/28/2026

Mfr. Part No.
M85049/8-7W

Mouser Part No
523-85049/8-7W

Circular MIL Spec Backshells 8 Backshell Env-EMI/RFI

Datasheet

23Expected 10/28/2026

42,90 €

39,39 €

39,38 €

39,36 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 82 Backshell Band Lock

M85049/82-12N02
Amphenol PCD
1: 35,28 €
5Expected 11/4/2026

Mfr. Part No.
M85049/82-12N02

Mouser Part No
523-85049/82-12N02

Circular MIL Spec Backshells 82 Backshell Band Lock

Datasheet

5Expected 11/4/2026

35,28 €

32,47 €

32,46 €

32,31 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 84 Backshell Band Lock

M85049/84-10N03
Amphenol PCD
1: 57,51 €
25Expected 9/29/2026

Mfr. Part No.
M85049/84-10N03

Mouser Part No
523-85049/84-10N03

Circular MIL Spec Backshells 84 Backshell Band Lock

Datasheet

25Expected 9/29/2026

57,51 €

49,67 €

46,83 €

Quote

Min.: 1
Mult.: 1

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

M85049/84-12N02
Amphenol PCD
1: 60,80 €
25Expected 11/5/2026

Mfr. Part No.
M85049/84-12N02

Mouser Part No
523-85049/84-12N02

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

Datasheet

25Expected 11/5/2026

60,80 €

52,73 €

51,53 €

49,17 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 85 Backshell Band Lock

M85049/85-24N02
Amphenol PCD
1: 49,37 €
19Expected 11/13/2026

Mfr. Part No.
M85049/85-24N02

Mouser Part No
523-85049/85-24N02

Circular MIL Spec Backshells 85 Backshell Band Lock

Datasheet

19Expected 11/13/2026

49,37 €

43,23 €

41,00 €

39,04 €

37,18 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPT NIC SZ 24

M85049/86-24N02
Amphenol PCD
1: 57,22 €
13Expected 10/23/2026

Mfr. Part No.
M85049/86-24N02

Mouser Part No
523-85049/86-24N02

Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPT NIC SZ 24

Datasheet

13Expected 10/23/2026

57,22 €

54,12 €

54,11 €

53,71 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 89 Backshell Band Lock

M85049/89-23N03
Amphenol PCD
1: 60,11 €
19Expected 11/24/2026

Mfr. Part No.
M85049/89-23N03

Mouser Part No
523-85049/89-23N03

Circular MIL Spec Backshells 89 Backshell Band Lock

Datasheet

19Expected 11/24/2026

60,11 €

54,73 €

52,23 €

51,32 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 13

M85049/90-13N02
Amphenol PCD
1: 60,97 €
13Expected 10/28/2026

Mfr. Part No.
M85049/90-13N02

Mouser Part No
523-85049/90-13N02

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 13

Datasheet

13Expected 10/28/2026

60,97 €

52,54 €

49,24 €

46,90 €

View

Min.: 1
Mult.: 1