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 31 Backshell Grommet Nut

M85049/31-14N
Amphenol PCD
1: 10,02 €
78In Stock

Mfr. Part No.
M85049/31-14N

Mouser Part No
523-85049/31-14N

Amphenol PCD

Circular MIL Spec Backshells 31 Backshell Grommet Nut

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Datasheet

78In Stock

10,02 €

9,17 €

8,82 €

8,11 €

7,38 €

Min.: 1
Mult.: 1

E Nuts

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 16

M85049/31-16N
Amphenol PCD
1: 12,89 €
17In Stock

Mfr. Part No.
M85049/31-16N

Mouser Part No
523-85049/31-16N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 16

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Datasheet

17In Stock

12,89 €

11,43 €

10,99 €

10,45 €

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Min.: 1
Mult.: 1

E Nuts

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells 31 Backshell Grommet Nut

M85049/31-18N
Amphenol PCD
1: 8,37 €
17In Stock
25Expected 28/05/2026

Mfr. Part No.
M85049/31-18N

Mouser Part No
523-85049/31-18N

Amphenol PCD

Circular MIL Spec Backshells 31 Backshell Grommet Nut

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Datasheet

17In Stock

25Expected 28/05/2026

8,37 €

8,14 €

7,68 €

Min.: 1
Mult.: 1

E Nuts

MIL-DTL-5015, MIL-DTL-26482 II

Straight

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

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 20

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Datasheet

26In Stock

11,97 €

11,65 €

9,90 €

9,56 €

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Min.: 1
Mult.: 1

E Nuts

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST BLACK SZ 22

M85049/31-22A
Amphenol PCD
1: 13,36 €
4In Stock

Mfr. Part No.
M85049/31-22A

Mouser Part No
523-85049/31-22A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST BLACK SZ 22

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Datasheet

4In Stock

13,36 €

11,58 €

10,29 €

10,20 €

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Min.: 1
Mult.: 1

E Nuts

MIL-DTL-5015, MIL-DTL-26482 II

Straight

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

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 22

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Datasheet

10In Stock

14,95 €

12,42 €

11,45 €

10,22 €

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Min.: 1
Mult.: 1

E Nuts

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 24

M85049/31-24N
Amphenol PCD
1: 13,86 €
1In Stock

Mfr. Part No.
M85049/31-24N

Mouser Part No
523-85049/31-24N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 24

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Datasheet

1In Stock

13,86 €

12,06 €

12,05 €

11,85 €

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Min.: 1
Mult.: 1

E Nuts

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 32

M85049/31-32N
Amphenol PCD
1: 21,25 €
22In Stock

Mfr. Part No.
M85049/31-32N

Mouser Part No
523-85049/31-32N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST NIC SZ 32

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Datasheet

22In Stock

21,25 €

19,30 €

19,29 €

18,00 €

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Min.: 1
Mult.: 1

E Nuts

MIL-DTL-5015, MIL-DTL-26482 II

Straight

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

M85049/31S16N
Amphenol PCD
1: 18,52 €
23In Stock

Mfr. Part No.
M85049/31S16N

Mouser Part No
523-85049/31S16N

Amphenol PCD

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

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Datasheet

23In Stock

18,52 €

15,74 €

14,52 €

14,17 €

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Min.: 1
Mult.: 1

E Nuts

MIL-DTL-5015, MIL-DTL-26482 II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL CRIMP RING ADAPTER ST NIC SZ 0

M85049/33-2-08N
Amphenol PCD
1: 35,90 €
25In Stock

Mfr. Part No.
M85049/33-2-08N

Mouser Part No
523-85049/33-2-08N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL CRIMP RING ADAPTER ST NIC SZ 0

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Datasheet

25In Stock

35,90 €

35,87 €

35,66 €

17,48 €

Min.: 1
Mult.: 1

Adapters

MIL-DTL-38999 I, II

Straight

Circular MIL Spec Strain Reliefs & Adapters 33 Backshell Crmp Rng

M85049/33-2-10N
Amphenol PCD
1: 22,49 €
38In Stock

Mfr. Part No.
M85049/33-2-10N

Mouser Part No
523-85049/33-2-10N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters 33 Backshell Crmp Rng

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Datasheet

38In Stock

22,49 €

19,11 €

18,35 €

17,25 €

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Min.: 1
Mult.: 1

Adapters

MIL-DTL-38999 I, II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL CRIMP RING ADAPTER ST NIC SZ 1

M85049/33-2-16N
Amphenol PCD
1: 24,60 €
7In Stock

Mfr. Part No.
M85049/33-2-16N

Mouser Part No
523-85049/33-2-16N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL CRIMP RING ADAPTER ST NIC SZ 1

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Datasheet

7In Stock

24,60 €

20,02 €

19,20 €

18,88 €

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Min.: 1
Mult.: 1

Adapters

MIL-DTL-38999 I, II

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL CRIMP RING ADAPTER ST NIC SZ 18

M85049/33-2-18N
Amphenol PCD
1: 20,66 €
22In Stock

Mfr. Part No.
M85049/33-2-18N

Mouser Part No
523-85049/33-2-18N

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL CRIMP RING ADAPTER ST NIC SZ 18

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Datasheet

22In Stock

20,66 €

18,96 €

18,81 €

17,66 €

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Min.: 1
Mult.: 1

Adapters

MIL-DTL-38999 I, II

Straight

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

Amphenol PCD

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

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Datasheet

11In Stock

52,13 €

45,21 €

43,47 €

42,02 €

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Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 I, II

Straight

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

M85049/3614N05
Amphenol PCD
1: 53,69 €
11In Stock

Mfr. Part No.
M85049/3614N05

Mouser Part No
523-85049/3614N05

Amphenol PCD

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

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Datasheet

11In Stock

53,69 €

49,73 €

49,62 €

45,03 €

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Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 I, II

Straight

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

M85049/3616N04
Amphenol PCD
1: 61,31 €
25In Stock

Mfr. Part No.
M85049/3616N04

Mouser Part No
523-85049/3616N04

Amphenol PCD

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

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Datasheet

25In Stock

61,31 €

54,82 €

49,24 €

44,48 €

View

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 I, II

Straight

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

Amphenol PCD

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

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Datasheet

12In Stock

54,90 €

48,27 €

46,41 €

44,87 €

42,39 €

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 I, II

Straight

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

Amphenol PCD

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

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Datasheet

20In Stock

64,59 €

58,20 €

47,83 €

44,33 €

View

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 I, II

Straight

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

Amphenol PCD

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

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Datasheet

5In Stock

60,95 €

51,81 €

48,56 €

46,24 €

44,68 €

Min.: 1
Mult.: 1

Non-Environmental EMI/RFI Backshells

MIL-DTL-38999 I, II

Straight

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 11 STRAIN RELIEF BLACK

M85049/38-11A
Amphenol PCD
1: 11,21 €
75In Stock
225Expected 16/03/2026

Mfr. Part No.
M85049/38-11A

Mouser Part No
523-85049/38-11A

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 11 STRAIN RELIEF BLACK

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Datasheet

75In Stock

225Expected 16/03/2026

11,21 €

10,41 €

8,06 €

7,85 €

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL STRAIGHT BLACK SIZE 13 SR

M85049/38-13A
Amphenol PCD
1: 11,71 €
125In Stock

Mfr. Part No.
M85049/38-13A

Mouser Part No
523-85049/38-13A

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL STRAIGHT BLACK SIZE 13 SR

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Datasheet

125In Stock

11,71 €

10,01 €

9,37 €

8,94 €

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 15 STRAIN RELIEF BLACK

M85049/38-15A
Amphenol PCD
1: 11,71 €
72In Stock
100On Order

Mfr. Part No.
M85049/38-15A

Mouser Part No
523-85049/38-15A

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters ST BACKSHELL SZ 15 STRAIN RELIEF BLACK

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Datasheet

72In Stock

100On Order

11,71 €

10,60 €

10,23 €

9,76 €

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Strain Reliefs & Adapters 38 Backshell Strain Relief Clamp

M85049/38-17A
Amphenol PCD
1: 12,68 €
47In Stock

Mfr. Part No.
M85049/38-17A

Mouser Part No
523-85049/38-17A

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters 38 Backshell Strain Relief Clamp

Learn More

Datasheet

47In Stock

12,68 €

11,82 €

11,58 €

11,32 €

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL STRAIGHT BLACK SIZE 19 SR

M85049/38-19A
Amphenol PCD
1: 14,77 €
15In Stock
25Expected 04/03/2026

Mfr. Part No.
M85049/38-19A

Mouser Part No
523-85049/38-19A

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL STRAIGHT BLACK SIZE 19 SR

Learn More

Datasheet

15In Stock

25Expected 04/03/2026

14,77 €

13,21 €

11,49 €

11,34 €

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 III, IV

Straight

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL STRAIGHT BLACK SIZE 21 SR

M85049/38-21A
Amphenol PCD
1: 13,56 €
23In Stock

Mfr. Part No.
M85049/38-21A

Mouser Part No
523-85049/38-21A

Amphenol PCD

Circular MIL Spec Strain Reliefs & Adapters BACKSHELL STRAIGHT BLACK SIZE 21 SR

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Datasheet

23In Stock

13,56 €

12,44 €

11,01 €

10,78 €

View

Min.: 1
Mult.: 1

Strain Reliefs

MIL-DTL-38999 III, IV

Straight

Backshell Clamps

Types of Circular MIL Spec Connectors

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