Circular MIL Spec Connectors

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Backshell Clamps

Amphenol PCD Backshell Clamps help to tidy up the cable after termination and provide strain relief at the termination area. The clamps are offered in environmental and non-environmental options, as well as EMI/RFI. The components are available in black zinc nickel, adding to the existing finishes in olive drab gray cadmium, tin, or nickel with a variety of shell sizes 11 through 48. Amphenol PCD Backshell Clamps meet MIL-DTL-38999, MIL-DTL-26482 Series II, MIL-DTL-83723 Series I and II, MIL-DTL-24308, and MIL-DTL-83513.

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Types of Circular MIL Spec Connectors

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Part #

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

M85049/1815N05
Amphenol PCD
1: 58,85 €
246In Stock

Mfr. Part No.
M85049/1815N05

Mouser Part No
523-85049/1815N05

Amphenol PCD

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

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Datasheet

246In Stock

58,85 €

51,66 €

41,25 €

40,86 €

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Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1817N04
Amphenol PCD
1: 55,41 €
226In Stock
150Expected 06/10/2026

Mfr. Part No.
M85049/1817N04

Mouser Part No
523-85049/1817N04

Amphenol PCD

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

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Datasheet

226In Stock

150Expected 06/10/2026

55,41 €

49,64 €

47,27 €

45,02 €

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Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1817N05
Amphenol PCD
1: 62,73 €
29In Stock
25Expected 06/10/2026

Mfr. Part No.
M85049/1817N05

Mouser Part No
523-85049/1817N05

Amphenol PCD

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

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Datasheet

29In Stock

25Expected 06/10/2026

62,73 €

53,33 €

52,80 €

47,60 €

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Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1819N07
Amphenol PCD
1: 64,21 €
48In Stock

Mfr. Part No.
M85049/1819N07

Mouser Part No
523-85049/1819N07

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

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Datasheet

48In Stock

64,21 €

54,58 €

51,16 €

48,72 €

46,40 €

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1821N05
Amphenol PCD
1: 63,21 €
49In Stock

Mfr. Part No.
M85049/1821N05

Mouser Part No
523-85049/1821N05

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

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Datasheet

49In Stock

63,21 €

54,33 €

50,93 €

48,50 €

46,19 €

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1821N08
Amphenol PCD
1: 66,38 €
27In Stock
75On Order

Mfr. Part No.
M85049/1821N08

Mouser Part No
523-85049/1821N08

Amphenol PCD

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

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Datasheet

27In Stock

75On Order

66,38 €

57,39 €

53,78 €

51,22 €

48,78 €

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 23

M85049/1823N09
Amphenol PCD
1: 74,82 €
55In Stock

Mfr. Part No.
M85049/1823N09

Mouser Part No
523-85049/1823N09

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 23

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Datasheet

55In Stock

74,82 €

63,61 €

61,07 €

59,03 €

53,00 €

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1825N05
Amphenol PCD
1: 70,58 €
57In Stock

Mfr. Part No.
M85049/1825N05

Mouser Part No
523-85049/1825N05

Amphenol PCD

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

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Datasheet

57In Stock

70,58 €

64,05 €

61,37 €

56,03 €

51,64 €

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1825N06
Amphenol PCD
1: 75,75 €
27In Stock

Mfr. Part No.
M85049/1825N06

Mouser Part No
523-85049/1825N06

Amphenol PCD

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

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Datasheet

27In Stock

75,75 €

71,51 €

66,81 €

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Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1825N07
Amphenol PCD
1: 63,12 €
71In Stock

Mfr. Part No.
M85049/1825N07

Mouser Part No
523-85049/1825N07

Amphenol PCD

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

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Datasheet

71In Stock

63,12 €

63,01 €

53,95 €

53,01 €

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1825N08
Amphenol PCD
1: 73,72 €
77In Stock
75Expected 06/10/2026

Mfr. Part No.
M85049/1825N08

Mouser Part No
523-85049/1825N08

Amphenol PCD

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

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Datasheet

77In Stock

75Expected 06/10/2026

73,72 €

65,81 €

65,80 €

65,33 €

View

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1825N08B
Amphenol PCD
1: 74,74 €
21In Stock

Mfr. Part No.
M85049/1825N08B

Mouser Part No
523-85049/1825N08B

Amphenol PCD

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

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Datasheet

21In Stock

74,74 €

68,16 €

66,62 €

61,63 €

View

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1825N09
Amphenol PCD
1: 76,39 €
23In Stock

Mfr. Part No.
M85049/1825N09

Mouser Part No
523-85049/1825N09

Amphenol PCD

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

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Datasheet

23In Stock

76,39 €

65,31 €

61,21 €

58,29 €

55,53 €

Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

M85049/1911N03
Amphenol PCD
1: 50,40 €
69In Stock
200On Order

Mfr. Part No.
M85049/1911N03

Mouser Part No
523-85049/1911N03

Amphenol PCD

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

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Datasheet

69In Stock

200On Order

50,40 €

42,85 €

40,16 €

38,25 €

View

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 13

M85049/1913N04
Amphenol PCD
1: 48,37 €
120In Stock
75Expected 06/10/2026

Mfr. Part No.
M85049/1913N04

Mouser Part No
523-85049/1913N04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 13

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Datasheet

120In Stock

75Expected 06/10/2026

48,37 €

43,11 €

40,40 €

38,48 €

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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 EMI/RFI ST NIC SZ 15

M85049/1915N03
Amphenol PCD
1: 50,65 €
186In Stock

Mfr. Part No.
M85049/1915N03

Mouser Part No
523-85049/1915N03

Amphenol PCD

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

Learn More

Datasheet

186In Stock

50,65 €

43,92 €

43,78 €

39,47 €

Quote

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1915N04
Amphenol PCD
1: 53,76 €
35In Stock

Mfr. Part No.
M85049/1915N04

Mouser Part No
523-85049/1915N04

Amphenol PCD

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

Learn More

Datasheet

35In Stock

53,76 €

45,69 €

42,83 €

40,79 €

View

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

M85049/1917N05
Amphenol PCD
1: 52,49 €
214In Stock

Mfr. Part No.
M85049/1917N05

Mouser Part No
523-85049/1917N05

Amphenol PCD

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

Learn More

Datasheet

214In Stock

52,49 €

46,45 €

44,24 €

42,13 €

View

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1919N07
Amphenol PCD
1: 57,16 €
111In Stock
225Expected 02/11/2026

Mfr. Part No.
M85049/1919N07

Mouser Part No
523-85049/1919N07

Amphenol PCD

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

Learn More

Datasheet

111In Stock

225Expected 02/11/2026

57,16 €

50,14 €

50,13 €

49,42 €

View

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1921N05
Amphenol PCD
1: 58,26 €
33In Stock

Mfr. Part No.
M85049/1921N05

Mouser Part No
523-85049/1921N05

Amphenol PCD

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

Learn More

Datasheet

33In Stock

58,26 €

56,64 €

54,59 €

44,20 €

View

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

M85049/1921N06
Amphenol PCD
1: 58,07 €
83In Stock

Mfr. Part No.
M85049/1921N06

Mouser Part No
523-85049/1921N06

Amphenol PCD

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

Learn More

Datasheet

83In Stock

58,07 €

50,35 €

50,21 €

44,57 €

Quote

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

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

M85049/1921N08
Amphenol PCD
1: 70,92 €
64In Stock

Mfr. Part No.
M85049/1921N08

Mouser Part No
523-85049/1921N08

Amphenol PCD

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

Learn More

Datasheet

64In Stock

70,92 €

52,25 €

45,07 €

44,85 €

Quote

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

M85049/1925N04
Amphenol PCD
1: 61,77 €
102In Stock

Mfr. Part No.
M85049/1925N04

Mouser Part No
523-85049/1925N04

Amphenol PCD

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

Learn More

Datasheet

102In Stock

61,77 €

54,91 €

54,74 €

View

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 25

M85049/1925N06
Amphenol PCD
1: 64,25 €
37In Stock

Mfr. Part No.
M85049/1925N06

Mouser Part No
523-85049/1925N06

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 25

Learn More

Datasheet

37In Stock

64,25 €

57,11 €

56,94 €

54,89 €

View

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 25

M85049/1925N07A
Amphenol PCD
1: 66,85 €
27In Stock

Mfr. Part No.
M85049/1925N07A

Mouser Part No
523-85049/1925N07A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NIC SZ 25

Learn More

Datasheet

27In Stock

66,85 €

58,14 €

52,86 €

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 III, IV

Straight

Backshell Clamps

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