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
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Packaging
Amphenol Aerospace Circular MIL Spec Connector SIZE 9; 3 PIN CRIMP JAM NUT RECEPT
Datasheet
145In Stock
Min.: 1
Mult.: 1
3 Position Socket (Female) 09-98 Receptacles 9 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 13P RCPT SZ 11 SKT PNL MNT
Datasheet
29In 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 TRI-START ALUMINUM
Datasheet
56In Stock
37Expected 04/05/2026
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 Each
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
67In Stock
Min.: 1
Mult.: 1

37 Position Socket (Female) 15-35 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 4P FM SZ 13 PIN PNL MNT
Datasheet
132In Stock
Min.: 1
Mult.: 1
No
4 Position Pin (Male) 13-04 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
51In Stock
Min.: 1
Mult.: 1
No
26 Position Pin (Male) 17-26 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 11P FM SZ 21 SKT PNL MNT
Datasheet
61In Stock
Min.: 1
Mult.: 1
No
11 Position Socket (Female) 21-11 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 9 SKT CBL MNT
Datasheet
40In Stock
Min.: 1
Mult.: 1
6 Position Socket (Female) 09-35 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 6P SIZE 9 SOCKET CABLE MOUNT
Datasheet
33In Stock
Min.: 1
Mult.: 1
No
6 Position Socket (Female) 09-35 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 8P SIZE 13 STRAIGHT PLUG PIN
Datasheet
100In Stock
Min.: 1
Mult.: 1
No
8 Position Pin (Male) 13-08 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 11P PLG SZ 19 SKT CBL MNT
Datasheet
30In Stock
Min.: 1
Mult.: 1
No
11 Position Socket (Female) 19-11 Plugs 19 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 79P SIZE 21 STRAIGHT PLUG SKT
Datasheet
17In Stock
Min.: 1
Mult.: 1
No
79 Position Socket (Female) 21-35 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
11In Stock
Min.: 1
Mult.: 1
No
29 Position Pin (Male) 25-29 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 22P RCPT SZ 13 PIN WL MNT
Datasheet
15In Stock
Min.: 1
Mult.: 1
22 Position Pin (Male) 13-35 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 8P FM SZ 13 SKT WL MNT
Datasheet
9In Stock
Min.: 1
Mult.: 1
8 Position Socket (Female) 13-08 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector ALUMINUM
Datasheet
99On Order
Min.: 1
Mult.: 1

55 Position Pin (Male) 17-35 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 11P SZ 19 WALL MNT SOCKET
Datasheet
7In Stock
Min.: 1
Mult.: 1
11 Position Socket (Female) 19-11 Receptacles 19 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 79P WL mnt soc sz 21
Datasheet
5In Stock
Min.: 1
Mult.: 1
79 Position Pin (Male) 21-35 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 79P RCPT SZ 21 SKT WL MNT
Datasheet
7In Stock
Min.: 1
Mult.: 1
79 Position Socket (Female) 21-35 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 100P SZ 23WALL MOUNT SOCKET
Datasheet
1In Stock
Min.: 1
Mult.: 1
100 Position Without Socket Contacts 23-35 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 100P SIZE 23 WALL MOUNT RECEPTACLE PIN
Datasheet
8In Stock
Min.: 1
Mult.: 1
100 Position Pin (Male) 23-35 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 100P SIZE 23 WALL MOUNT RECEPTACLE PIN
Datasheet
1In Stock
Min.: 1
Mult.: 1
100 Position Pin (Male) 23-35 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 128P WL MNT SOC SZ 25
Datasheet
3In Stock
Min.: 1
Mult.: 1
128 Position Without Socket Contacts 25-35 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 128P WL MNT SOC SZ 25
Datasheet
2In Stock
Min.: 1
Mult.: 1
128 Position Without Socket Contacts 25-35 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
23Expected 28/04/2026
Min.: 1
Mult.: 1

128 Position Socket (Female) 25-35 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp 5 A Gold Copper Alloy 38999 Aluminum