Circular MIL Spec Backshells

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QPL Composite Plated EMI/RFI Braided Backshells

Amphenol PCD QPL Composite Plated EMI/RFI Braided Backshells offer effective shielding due to the 360° contact of the braid and are suitable for weight-sensitive applications. Composite backshells are sought after for harsh environments because metal backshells are susceptible to corrosion. These backshells feature a pre-shielded strain relief, EMI/RFI shielding, and AS85049 qualification. Amphenol PCD QPL Composite Plated EMI/RFI Braided Backshells mate with MIL-DTL-38999 Series III connectors and are ideal for avionics, communications, military aerospace, and naval applications.

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Part #

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-09
Amphenol PCD
1: NT$2,786.62
33In Stock

Mfr. Part #
M85049/103-09

Mouser Part #
523-M85049/103-09

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

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Datasheet

33In Stock

NT$2,786.62

NT$2,585.86

NT$2,277.55

NT$2,175.74

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-13
Amphenol PCD
1: NT$3,044.38
52In Stock

Mfr. Part #
M85049/103-13

Mouser Part #
523-M85049/103-13

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

Learn More

Datasheet

52In Stock

NT$3,044.38

NT$2,815.30

NT$2,494.44

NT$2,376.86

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-11
Amphenol PCD
1: NT$3,434.07
28In Stock

Mfr. Part #
M85049/104-11

Mouser Part #
523-M85049/104-11

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

28In Stock

NT$3,434.07

NT$3,240.48

NT$2,896.32

NT$2,750.77

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

45 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-13
Amphenol PCD
1: NT$3,434.07
20In Stock

Mfr. Part #
M85049/104-13

Mouser Part #
523-M85049/104-13

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

20In Stock

NT$3,434.07

NT$3,240.48

NT$2,896.32

NT$2,750.77

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

45 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-11
Amphenol PCD
1: NT$3,976.48
52In Stock

Mfr. Part #
M85049/105-11

Mouser Part #
523-M85049/105-11

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

52In Stock

NT$3,976.48

NT$3,735.21

NT$3,364.16

NT$3,184.91

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-13
Amphenol PCD
1: NT$4,172.94
22In Stock

Mfr. Part #
M85049/105-13

Mouser Part #
523-M85049/105-13

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

22In Stock

NT$4,172.94

NT$3,914.46

NT$3,533.73

NT$3,342.30

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-11
Amphenol PCD
1: NT$2,908.51
8In Stock
25Expected 8/31/2026

Mfr. Part #
M85049/103-11

Mouser Part #
523-M85049/103-11

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

Learn More

Datasheet

8In Stock

25Expected 8/31/2026

NT$2,908.51

NT$2,694.13

NT$2,380.08

NT$2,270.74

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-15
Amphenol PCD
1: NT$3,044.38
18In Stock

Mfr. Part #
M85049/103-15

Mouser Part #
523-M85049/103-15

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

Learn More

Datasheet

18In Stock

NT$3,044.38

NT$2,815.30

NT$2,494.44

NT$2,376.50

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-17
Amphenol PCD
1: NT$3,114.29
12In Stock

Mfr. Part #
M85049/103-17

Mouser Part #
523-M85049/103-17

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

Learn More

Datasheet

12In Stock

NT$3,114.29

NT$2,925.36

NT$2,659.71

NT$2,658.28

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-19
Amphenol PCD
1: NT$3,113.93
17In Stock

Mfr. Part #
M85049/103-19

Mouser Part #
523-M85049/103-19

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

Learn More

Datasheet

17In Stock

NT$3,113.93

NT$2,948.30

NT$2,620.28

NT$2,494.08

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-19
Amphenol PCD
1: NT$4,349.32
8In Stock

Mfr. Part #
M85049/105-19

Mouser Part #
523-M85049/105-19

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

8In Stock

NT$4,349.32

NT$4,075.43

NT$3,732.70

NT$3,731.99

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-09
Amphenol PCD
1: NT$3,976.12
15Expected 11/4/2026

Mfr. Part #
M85049/105-09

Mouser Part #
523-M85049/105-09

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

15Expected 11/4/2026

NT$3,976.12

NT$3,734.85

NT$3,409.34

NT$2,882.70

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-09
Amphenol PCD
1: NT$3,355.92
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
M85049/104-09

Mouser Part #
523-M85049/104-09

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

NT$3,355.92

NT$3,169.14

NT$2,829.28

NT$2,687.67

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-15
Amphenol PCD
1: NT$3,523.70
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
M85049/104-15

Mouser Part #
523-M85049/104-15

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

NT$3,523.70

NT$3,322.22

NT$2,973.76

NT$2,822.47

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

45 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-17
Amphenol PCD
25: NT$2,973.76
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
M85049/104-17

Mouser Part #
523-M85049/104-17

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

NT$2,973.76

NT$2,822.47

View

Min.: 25
Mult.: 25

MIL-DTL-38999 III, IV

EMI/RFI Backshells

45 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-19
Amphenol PCD
25: NT$3,189.22
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
M85049/104-19

Mouser Part #
523-M85049/104-19

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

NT$3,189.22

NT$3,153.72

View

Min.: 25
Mult.: 25

MIL-DTL-38999 III, IV

EMI/RFI Backshells

45 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-15
Amphenol PCD
1: NT$4,172.22
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
M85049/105-15

Mouser Part #
523-M85049/105-15

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

NT$4,172.22

NT$3,913.74

NT$3,533.02

NT$3,341.22

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-17
Amphenol PCD
25: NT$3,686.46
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
M85049/105-17

Mouser Part #
523-M85049/105-17

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

NT$3,686.46

NT$3,685.38

NT$3,483.54

View

Min.: 25
Mult.: 25

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

QPL Composite Plated EMI/RFI Braided Backshells

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