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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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS Product
MIL Type
Shell Size
Shell Style
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
13In 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
15In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 24 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
15In 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 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 2
Datasheet
6In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 10 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 19 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
16In 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 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 8 Black Zinc Nickel w/ Exposed Nickel Entry Size 2
Datasheet
9In Stock
25Expected 7/15/2026
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 8 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
18In 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
17In 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 2
Datasheet
17In 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 1
Datasheet
15In Stock
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 16 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
3In Stock
50On Order
Min.: 1
Mult.: 1
Band Lock Adapters MIL-DTL-38999 III, IV 25 Straight
Amphenol PCD Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2
Datasheet
13In Stock
25Expected 5/28/2026
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
8In 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;BZN
Datasheet
224In Stock
Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells MIL-DTL-38999 III, IV 25
Amphenol PCD Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 25
Datasheet
45In Stock
Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells MIL-DTL-38999 III, IV 25 Straight
Amphenol PCD Circular MIL Spec Backshells 84 Backshell Band Lock
Datasheet
20In Stock
Min.: 1
Mult.: 1

Band Lock Adapters MIL-DTL-5015, MIL-DTL-26482 II 24
Amphenol PCD Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG NIC SZ 9
Datasheet
29In Stock
Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells MIL-DTL-38999 III, IV 9
Amphenol PCD Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 21
Datasheet
29In Stock
Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells MIL-DTL-38999 III, IV 21 90 Deg
Amphenol PCD Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 23
Datasheet
31In Stock
Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells MIL-DTL-38999 III, IV 23 Straight
Amphenol PCD Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 11
Datasheet
42In Stock
Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells MIL-DTL-38999 III, IV 11 90 Deg
Amphenol PCD Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI R/A NIC SZ 19
Datasheet
23In Stock
Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells MIL-DTL-38999 III, IV 19 90 Deg
Amphenol PCD Circular MIL Spec Backshells BACKSHELL BND LOCK ADPTR ST NIC SZ 20
Datasheet
53In Stock
Min.: 1
Mult.: 1

Band Lock Adapters MIL-DTL-5015, MIL-DTL-26482 II 20
Amphenol PCD Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPT NIC SZ 15
Datasheet
35In Stock
Min.: 1
Mult.: 1

Band Lock Adapters MIL-DTL-38999 III, IV 15
Amphenol PCD Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 25
Datasheet
26In Stock
Min.: 1
Mult.: 1

Environmental EMI/RFI Backshells MIL-DTL-38999 III, IV 25 Straight