MIL-DTL-38999 Series III Connectors

Amphenol MIL-DTL-38999 Series III Circular Connectors deliver high-performance capabilities for demanding general duty and harsh environment applications. Developed to operate under severe high temperature and vibration, the connectors feature rapid coupling via a Tri-Start™ thread, shell-to-shell, or metal-to-metal bottoming. Amphenol designed these connectors to provide an EMI shielding capability of 65dB minimum at 10GHz and corrosion resistance of up to 500-hour salt spray exposure. Amphenol MIL-DTL-38999 Series III Circular Connectors offer a rated current range of 1.5A to 5A, a temperature range of -65°C to +175°C, minimum insulation resistance of 5000MΩ, and a dielectric withstanding voltage of 1000VRMS. These rugged and highly reliable circular connectors are ideally suited for industrial, commercial air, military, C4ISR, and space applications.

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Qty. RoHS ECAD Model Number of Positions
Contact Gender
Insert Arrangement
Product
Shell Size
Shell Style
MIL Type
Termination Style
Mounting Style
Current Rating
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Contact Material
Series
Packaging
Amphenol Aerospace Circular MIL Spec Connector 100P RCPT SZ 23 SKT WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
100 Position Socket (Female) 23-35 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 53P FM SZ 23 SCKT WL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
53 Position Socket (Female) 23-53 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 19P RCPT SZ 25 PIN WL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
19 Position Pin (Male) 25-19 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 24P FM SZ 25 PIN WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
24 Position Pin (Male) 25-24 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 13 A, 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 24P RCPT SZ 25 SKT WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
24 Position Socket (Female) 25-24 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 13 A, 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
128 Position Pin (Male) 25-35 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 128P FM SZ 25 SKT WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
128 Position Socket (Female) 25-35 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 56P RCPT SZ 25 PIN WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
56 Position Pin (Male) 25-04 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 61P FM SZ 25 PIN WL MNT
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
61 Position Pin (Male) 25-61 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 61P RCPT SZ 25 SKT WL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
61 Position Socket (Female) 25-61 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 8P SZ 25 RCPT WALL MNT PIN
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
8 Position Without Pin Contacts 25-08 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 46 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 13P SIZE 11 JAM NUT RECEPTACLE SKT
Datasheet
4In Stock
Min.: 1
Mult.: 1
13 Position Socket (Female) 11-35 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 5P JAM NUT SOC SZ 11
Datasheet
2In Stock
Min.: 1
Mult.: 1

5 Position Socket (Female) 11-05 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 4P jam nut soc sz 13
Datasheet
1In Stock
Min.: 1
Mult.: 1

4 Position Socket (Female) 13-04 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 10P FM SZ 13 SKT PNL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1
10 Position Socket (Female) 13-98 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
1In Stock
27Expected 20/04/2026
Min.: 1
Mult.: 1
10 Position Socket (Female) 13-98 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 37P SIZE 15 JAM NUT RECEPTACLE PIN
Datasheet
3In Stock
Min.: 1
Mult.: 1

37 Position Pin (Male) 15-35 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 55P RCPT SZ 17 SKT PNL MNT
Datasheet
1In Stock
24Expected 03/03/2026
Min.: 1
Mult.: 1

55 Position Socket (Female) 17-35 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 8P RCPT SZ 17 PIN PNL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1

8 Position Pin (Male) 17-08 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 11P SZ 19 PANEL MOUNT PIN
Datasheet
4In Stock
Min.: 1
Mult.: 1

11 Position Pin (Male) 19-11 Receptacles 19 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 39P FM SZ 21 PIN PNL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1

39 Position Pin (Male) 21-39 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 21P RCPT SZ 23 SKT PNL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1

21 Position Socket (Female) 23-21 Receptacles 23 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 100P jam nut soc sz 23
Datasheet
1In Stock
Min.: 1
Mult.: 1
100 Position Socket (Female) 23-35 Receptacles 23 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 43P jam nut soc sz 25
Datasheet
1In Stock
Min.: 1
Mult.: 1

43 Position Socket (Female) 25-43 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 6P FM SZ 9 SKT PNL MNT
Datasheet
4In Stock
Min.: 1
Mult.: 1
6 Position Socket (Female) 09-35 Receptacles 9 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Bulk