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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 31 Backshell Grommet Nut

M85049/31-18N
Amphenol PCD
1: 8,37 €
17In Stock

Mfr. Part No.
M85049/31-18N

Mouser Part No
523-85049/31-18N

Circular MIL Spec Backshells 31 Backshell Grommet Nut

Datasheet

17In Stock

8,37 €

8,14 €

7,68 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 20

M85049/31-20N
Amphenol PCD
1: 11,97 €
26In Stock

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

26In Stock

11,97 €

11,65 €

9,90 €

9,56 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST BLACK SZ 22

M85049/31-22A
Amphenol PCD
1: 13,35 €
4In Stock

Mfr. Part No.
M85049/31-22A

Mouser Part No
523-85049/31-22A

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST BLACK SZ 22

Datasheet

4In Stock

13,35 €

12,13 €

10,30 €

9,52 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 22

M85049/31-22N
Amphenol PCD
1: 14,95 €
10In Stock

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

10In Stock

14,95 €

12,42 €

11,45 €

10,22 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 24

M85049/31-24N
Amphenol PCD
1: 13,85 €
1In Stock

Mfr. Part No.
M85049/31-24N

Mouser Part No
523-85049/31-24N

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 24

Datasheet

1In Stock

13,85 €

12,60 €

10,70 €

9,89 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 32

M85049/31-32N
Amphenol PCD
1: 21,24 €
22In Stock

Mfr. Part No.
M85049/31-32N

Mouser Part No
523-85049/31-32N

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 32

Datasheet

22In Stock

21,24 €

18,95 €

16,10 €

16,05 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 16

M85049/31S16N
Amphenol PCD
1: 18,51 €
23In Stock

Mfr. Part No.
M85049/31S16N

Mouser Part No
523-85049/31S16N

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST SL NIC SZ 16

Datasheet

23In Stock

18,51 €

16,27 €

13,82 €

13,56 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 36 Backshell Non Env-EMI/RFI

M85049/3614N04
Amphenol PCD
1: 52,13 €
11In Stock

Mfr. Part No.
M85049/3614N04

Mouser Part No
523-85049/3614N04

Circular MIL Spec Backshells 36 Backshell Non Env-EMI/RFI

Datasheet

11In Stock

52,13 €

45,21 €

43,47 €

42,02 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 36 Backshell Non Env-EMI/RFI

M85049/3614N05
Amphenol PCD
1: 51,62 €
11In Stock

Mfr. Part No.
M85049/3614N05

Mouser Part No
523-85049/3614N05

Circular MIL Spec Backshells 36 Backshell Non Env-EMI/RFI

Datasheet

11In Stock

51,62 €

51,42 €

48,50 €

45,65 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 16

M85049/3616N04
Amphenol PCD
1: 59,11 €
25In Stock

Mfr. Part No.
M85049/3616N04

Mouser Part No
523-85049/3616N04

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 16

Datasheet

25In Stock

59,11 €

52,91 €

44,96 €

41,19 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 16

M85049/3616N05
Amphenol PCD
1: 54,90 €
12In Stock

Mfr. Part No.
M85049/3616N05

Mouser Part No
523-85049/3616N05

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 16

Datasheet

12In Stock

54,90 €

48,27 €

46,41 €

44,87 €

42,39 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 16

M85049/3616N06
Amphenol PCD
1: 64,59 €
20In Stock

Mfr. Part No.
M85049/3616N06

Mouser Part No
523-85049/3616N06

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 16

Datasheet

20In Stock

64,59 €

58,20 €

47,83 €

44,33 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 22

M85049/3622N06
Amphenol PCD
1: 60,95 €
5In Stock

Mfr. Part No.
M85049/3622N06

Mouser Part No
523-85049/3622N06

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 22

Datasheet

5In Stock

60,95 €

51,81 €

48,56 €

46,24 €

44,68 €

Min.: 1
Mult.: 1

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

M85049/6-12N
Amphenol PCD
1: 48,81 €
12In Stock

Mfr. Part No.
M85049/6-12N

Mouser Part No
523-85049/6-12N

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

Datasheet

12In Stock

48,81 €

42,33 €

40,70 €

39,34 €

View

Min.: 1
Mult.: 1

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

M85049/6-17N
Amphenol PCD
1: 55,16 €
19In Stock

Mfr. Part No.
M85049/6-17N

Mouser Part No
523-85049/6-17N

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

Datasheet

19In Stock

55,16 €

48,50 €

46,64 €

45,08 €

42,59 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 9

M85049/78-09N02
Amphenol PCD
1: 58,70 €
5In Stock
25Expected 3/16/2026

Mfr. Part No.
M85049/78-09N02

Mouser Part No
523-85049/78-09N02

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 9

Datasheet

5In Stock

25Expected 3/16/2026

58,70 €

49,48 €

49,15 €

43,36 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 19

M85049/78-19N03
Amphenol PCD
1: 58,02 €
6In Stock
5Expected 3/26/2026

Mfr. Part No.
M85049/78-19N03

Mouser Part No
523-85049/78-19N03

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 19

Datasheet

6In Stock

5Expected 3/26/2026

58,02 €

55,03 €

49,69 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 21

M85049/78-21N07
Amphenol PCD
1: 71,03 €
5In Stock

Mfr. Part No.
M85049/78-21N07

Mouser Part No
523-85049/78-21N07

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 21

Datasheet

5In Stock

71,03 €

63,00 €

58,47 €

56,25 €

55,60 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 21

M85049/78-21N08
Amphenol PCD
1: 75,35 €
11In Stock

Mfr. Part No.
M85049/78-21N08

Mouser Part No
523-85049/78-21N08

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 21

Datasheet

11In Stock

75,35 €

70,12 €

63,92 €

63,87 €

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 25

M85049/78-25N10
Amphenol PCD
1: 87,27 €
10In Stock

Mfr. Part No.
M85049/78-25N10

Mouser Part No
523-85049/78-25N10

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 25

Datasheet

10In Stock

87,27 €

74,19 €

69,54 €

66,22 €

66,16 €

Min.: 1
Mult.: 1

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

M85049/79-13N03
Amphenol PCD
1: 60,96 €
5In Stock
25Expected 3/9/2026

Mfr. Part No.
M85049/79-13N03

Mouser Part No
523-85049/79-13N03

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

Datasheet

5In Stock

25Expected 3/9/2026

60,96 €

56,15 €

52,75 €

52,61 €

View

Min.: 1
Mult.: 1

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

M85049/79-15N02
Amphenol PCD
1: 63,24 €
20In Stock

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

20In Stock

63,24 €

54,98 €

View

Min.: 1
Mult.: 1

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

M85049/79-15N04
Amphenol PCD
1: 68,52 €
20In Stock

Mfr. Part No.
M85049/79-15N04

Mouser Part No
523-85049/79-15N04

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

Datasheet

20In Stock

68,52 €

68,37 €

65,45 €

60,92 €

View

Min.: 1
Mult.: 1

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

M85049/79-15N05
Amphenol PCD
1: 90,96 €
12In Stock
25Expected 3/23/2026

Mfr. Part No.
M85049/79-15N05

Mouser Part No
523-85049/79-15N05

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

Datasheet

12In Stock

25Expected 3/23/2026

90,96 €

75,59 €

64,24 €

53,82 €

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 17

M85049/79-17N03
Amphenol PCD
1: 80,30 €
10In Stock

Mfr. Part No.
M85049/79-17N03

Mouser Part No
523-85049/79-17N03

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 17

Datasheet

10In Stock

80,30 €

74,74 €

61,03 €

54,82 €

52,43 €

Min.: 1
Mult.: 1