Circular MIL Spec Backshells

.hide-partial { max-height: none; } .show-more { display: none; }

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.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 11,082

Applied Filters:

MIL Type

Product

Shell Style

Shell Size

Shell Plating

Shell Material

Series

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/82-18ZP02
Amphenol PCD
1: $57.35
15In Stock

Mfr. Part No.
M85049/82-18ZP02

Mouser Part No
523-M85049/82-18ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

15In Stock

$57.35

$52.76

$45.22

$43.66

View

Min.: 1
Mult.: 1

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

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

M85049/85-10ZP02
Amphenol PCD
1: $54.83
6In Stock

Mfr. Part No.
M85049/85-10ZP02

Mouser Part No
523-M85049/85-10ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

Learn More

Datasheet

6In Stock

$54.83

$46.82

$45.02

$43.52

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 19 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-19ZP02
Amphenol PCD
1: $64.12
19In Stock

Mfr. Part No.
M85049/88-19ZP02

Mouser Part No
523-M85049/88-19ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 19 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

19In Stock

$64.12

$59.41

$51.51

$49.51

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/88-25ZP03
Amphenol PCD
1: $75.43
11In Stock

Mfr. Part No.
M85049/88-25ZP03

Mouser Part No
523-M85049/88-25ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 3

Learn More

Datasheet

11In Stock

$75.43

$67.05

$64.47

$62.32

$58.88

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-24ZP02
Amphenol PCD
1: $74.26
18In Stock

Mfr. Part No.
M85049/85-24ZP02

Mouser Part No
523-M85049/85-24ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

18In Stock

$74.26

$66.01

$63.47

$61.35

$57.96

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 21 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-21ZP02
Amphenol PCD
1: $59.34
21In Stock

Mfr. Part No.
M85049/88-21ZP02

Mouser Part No
523-M85049/88-21ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 21 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

21In Stock

$59.34

$54.50

$46.86

$45.18

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

M85049/82-12ZP03
Amphenol PCD
1: $58.69
12In Stock

Mfr. Part No.
M85049/82-12ZP03

Mouser Part No
523-M85049/82-12ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

Learn More

Datasheet

12In Stock

$58.69

$53.93

$46.32

$44.68

View

Min.: 1
Mult.: 1

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

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

M85049/85-08ZP02
Amphenol PCD
1: $52.80
11In Stock

Mfr. Part No.
M85049/85-08ZP02

Mouser Part No
523-M85049/85-08ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

Learn More

Datasheet

11In Stock

$52.80

$45.09

$43.35

$41.90

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-16ZP02
Amphenol PCD
1: $60.50
17In Stock
25Expected 28/05/2026

Mfr. Part No.
M85049/85-16ZP02

Mouser Part No
523-M85049/85-16ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

17In Stock

25Expected 28/05/2026

$60.50

$52.46

$50.44

$48.76

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-20ZP02
Amphenol PCD
1: $64.36
8In Stock

Mfr. Part No.
M85049/85-20ZP02

Mouser Part No
523-M85049/85-20ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

8In Stock

$64.36

$56.59

$54.41

$52.59

$49.69

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/82-16ZP02
Amphenol PCD
1: $62.80
14In Stock

Mfr. Part No.
M85049/82-16ZP02

Mouser Part No
523-M85049/82-16ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

14In Stock

$62.80

$54.46

$52.37

$50.62

View

Min.: 1
Mult.: 1

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

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 1

M85049/85-24ZP01
Amphenol PCD
1: $74.26
15In Stock

Mfr. Part No.
M85049/85-24ZP01

Mouser Part No
523-M85049/85-24ZP01

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 1

Learn More

Datasheet

15In Stock

$74.26

$66.01

$63.47

$61.35

$57.96

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 1

M85049/85-16ZP01
Amphenol PCD
1: $60.50
15In Stock

Mfr. Part No.
M85049/85-16ZP01

Mouser Part No
523-M85049/85-16ZP01

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 1

Learn More

Datasheet

15In Stock

$60.50

$52.46

$50.44

$48.76

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-25ZP02
Amphenol PCD
1: $75.43
19In Stock

Mfr. Part No.
M85049/88-25ZP02

Mouser Part No
523-M85049/88-25ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

19In Stock

$75.43

$67.05

$64.47

$62.32

$58.88

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Straight

Aluminum Alloy

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 11

M85049/79-11N02
Amphenol PCD
1: $73.32
44In Stock

Mfr. Part No.
M85049/79-11N02

Mouser Part No
523-85049/79-11N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 11

Learn More

Datasheet

44In Stock

$73.32

$68.32

$62.92

$58.79

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Environmental EMI/RFI Backshells

90 Deg

Electroless Nickel

Aluminum Alloy

AS85049

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 19

M85049/79-19N03
Amphenol PCD
1: $84.20
23In Stock

Mfr. Part No.
M85049/79-19N03

Mouser Part No
523-85049/79-19N03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 19

Learn More

Datasheet

23In Stock

$84.20

$78.52

$76.43

$70.53

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Environmental EMI/RFI Backshells

90 Deg

Electroless Nickel

Aluminum Alloy

AS85049

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 23

M85049/90-23N03
Amphenol PCD
1: $82.36
67In Stock

Mfr. Part No.
M85049/90-23N03

Mouser Part No
523-85049/90-23N03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR R/A NIC SZ 23

Learn More

Datasheet

67In Stock

$82.36

$77.35

$64.79

$64.48

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Band Lock Adapters

Aluminum Alloy

AS85049

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 09

M85049/1809W02
Amphenol PCD
1: $46.74
921In Stock

Mfr. Part No.
M85049/1809W02

Mouser Part No
523-85049/1809W02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 09

Learn More

Datasheet

921In Stock

$46.74

$39.92

$38.36

$37.07

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Environmental EMI/RFI Backshells

Straight

Olive Drab Cadmium over Electroless Nickel

Aluminum Alloy

AS85049

Circular MIL Spec Backshells 62GB Connector

AIA500112000010AA04
Amphenol LTD
1: $139.24
15In Stock

Mfr. Part No.
AIA500112000010AA04

Mouser Part No
523-AIA500112010AA04

Amphenol LTD

Circular MIL Spec Backshells 62GB Connector

Datasheet

15In Stock

$139.24

$133.16

$125.73

$118.27

View

Min.: 1
Mult.: 1

MIL-DTL-26482

Solid Backshells

62GB

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-39W
Amphenol PCD
1: $74.90
21In Stock

Mfr. Part No.
M85049/11-39W

Mouser Part No
523-85049/11-39W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Learn More

Datasheet

21In Stock

$74.90

$71.09

$65.50

Quote

Min.: 1
Mult.: 1

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

Environmental Backshells

Straight

Olive Drab Cadmium over Electroless Nickel

Aluminum Alloy

AS85049

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

M85049/1817W05A
Amphenol PCD
1: $79.42
24In Stock

Mfr. Part No.
M85049/1817W05A

Mouser Part No
523-85049/1817W05A

Amphenol PCD

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

Learn More

Datasheet

24In Stock

$79.42

$70.60

$70.59

$66.81

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Environmental EMI/RFI Backshells

Straight

Olive Drab Cadmium over Electroless Nickel

Aluminum Alloy

AS85049

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

M85049/6-30W
Amphenol PCD
1: $157.55
27In Stock

Mfr. Part No.
M85049/6-30W

Mouser Part No
523-85049/6-30W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

Learn More

Datasheet

27In Stock

$157.55

$156.37

$156.36

Quote

Min.: 1
Mult.: 1

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

Environmental EMI/RFI Backshells

45 Deg

Olive Drab Cadmium over Electroless Nickel

Aluminum Alloy

AS85049

Circular MIL Spec Backshells 62GB

62GB5851007S
Amphenol LTD
1: $23.97
94In Stock

Mfr. Part No.
62GB5851007S

Mouser Part No
523-62GB5851007S

Amphenol LTD

Circular MIL Spec Backshells 62GB

Datasheet

94In Stock

$23.97

$20.37

$19.08

$18.17

View

Min.: 1
Mult.: 1

MIL-DTL-26482

Solid Backshells

Straight

Olive Drab Zinc Cobalt

Aluminum

62GB

Bulk

Circular MIL Spec Backshells 79 Backshell Env-EMI/RFI

M85049/79-25W07
Amphenol PCD
1: $113.99
21In Stock

Mfr. Part No.
M85049/79-25W07

Mouser Part No
523-85049/79-25W07

Amphenol PCD

Circular MIL Spec Backshells 79 Backshell Env-EMI/RFI

Learn More

Datasheet

21In Stock

$113.99

$105.24

$90.40

$86.32

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

Environmental EMI/RFI Backshells

90 Deg

Olive Drab Cadmium over Electroless Nickel

Aluminum Alloy

AS85049

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 22

M85049/10-43W
Amphenol PCD
1: $104.38
22In Stock

Mfr. Part No.
M85049/10-43W

Mouser Part No
523-85049/10-43W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 22

Learn More

Datasheet

22In Stock

$104.38

$95.87

$95.86

Quote

Min.: 1
Mult.: 1

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

Environmental EMI/RFI Backshells

Straight

Olive Drab Cadmium over Electroless Nickel

Aluminum Alloy

AS85049

Backshells

Customer Service Office

Company

Resources

Support

8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
28
32