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: $111.93
37In 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

Learn More

Datasheet

37In Stock

$111.93

$103.87

$91.48

$87.36

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

M85049/103-11
Amphenol PCD
1: $116.83
23In Stock

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

23In Stock

$116.83

$108.22

$95.60

$91.21

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: $122.28
58In 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

58In Stock

$122.28

$113.08

$100.20

$95.47

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: $125.09
23In 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

23In Stock

$125.09

$117.50

$106.83

$106.78

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: $125.08
25In 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

25In Stock

$125.08

$118.43

$105.25

$100.18

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: $137.94
34In 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

34In Stock

$137.94

$130.16

$116.34

$110.49

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: $137.94
24In 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

24In Stock

$137.94

$130.16

$116.34

$110.49

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: $159.72
53In 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

53In Stock

$159.72

$150.03

$135.13

$127.93

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

M85049/103-15
Amphenol PCD
1: $122.28
7In Stock
25Expected 2026-04-13

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

7In Stock

25Expected 2026-04-13

$122.28

$113.08

$100.20

$95.46

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

M85049/105-09
Amphenol PCD
1: $159.71
13In Stock

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

13In Stock

$159.71

$150.02

$135.12

$127.90

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: $167.62
22Expected 2026-04-13

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

22Expected 2026-04-13

$167.62

$157.23

$141.94

$134.25

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

M85049/105-19
Amphenol PCD
1: $174.70
24Expected 2026-04-09

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

24Expected 2026-04-09

$174.70

$163.70

$148.06

$148.03

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: $134.80
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

$134.80

$127.30

$113.64

$107.96

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
25: $119.45
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

$119.45

$113.37

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

M85049/104-17
Amphenol PCD
25: $119.45
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

$119.45

$113.37

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: $128.22
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

$128.22

$124.73

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: $167.59
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

$167.59

$157.20

$141.91

$134.21

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: $148.08
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

$148.08

$148.03

$139.92

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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