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.

Types of Circular MIL Spec Connectors
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Qty. RoHS Product
MIL Type
Shell Size
Shell Style
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
31In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 18 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 3
Datasheet
25In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 25 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
53In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 25 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 3
Datasheet
34In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-5015, MIL-DTL-26482 II 10 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 1
Datasheet
40In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 12 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
11In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-5015, MIL-DTL-26482 II 18 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 3
Datasheet
24In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-5015, MIL-DTL-26482 II 18 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 3
Datasheet
14In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-5015, MIL-DTL-26482 II 22 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 19 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
15In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 19 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 2
Datasheet
15In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-5015, MIL-DTL-26482 II 12 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 1
Datasheet
14In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 16 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
11In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-5015, MIL-DTL-26482 II 16 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 1
Datasheet
5In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 24 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
4In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 24 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 21 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
27In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 21 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 3
Datasheet
9In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-5015, MIL-DTL-26482 II 12 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 3
Datasheet
16In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-5015, MIL-DTL-26482 II 24 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry Size 2
Datasheet
25In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 8 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
15In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 12 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
29In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 16 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
4In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 20 Straight
Amphenol PCD Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 09
Datasheet
36In Stock
25Expected 2026/10/08
Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells MIL-DTL-38999 III, IV 9 Straight
Amphenol PCD Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPTR CAD SZ 23
Datasheet
570In Stock
Min.: 1
Mult.: 1
No
Band Lock Adapters MIL-DTL-38999 III, IV 23
Amphenol PCD Circular MIL Spec Backshells 90 Degrees Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry 3
Datasheet
23In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 10 90 Deg
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 21 Black Zinc Nickel w/ Exposed Nickel Entry 3
Datasheet
16In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 21 Straight