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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Amphenol Aerospace Circular MIL Spec Connector 21P RCPT SZ 23 SKT PNL MNT
Datasheet
55In Stock
Min.: 1
Mult.: 1
No
21 Position Socket (Female) 23-21 Receptacles 23 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 39P FM SZ 21 PIN WL MNT
Datasheet
96In Stock
Min.: 1
Mult.: 1
39 Position Pin (Male) 21-39 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 13P SIZE 11 STRAIGHT PLUG PIN
Datasheet
57In Stock
42On Order
Min.: 1
Mult.: 1
13 Position Pin (Male) 11-35 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P ST PLUG PIN SZ 11
Datasheet
91In Stock
Min.: 1
Mult.: 1
No
6 Position Pin (Male) 11-98 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 32P JAM NUT PIN SZ 19
Datasheet
95In Stock
Min.: 1
Mult.: 1
No
32 Position Pin (Male) 19-32 Receptacles 19 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 61P JAM NUT SOC SZ 25
Datasheet
37In Stock
60Expected 06/10/2026
Min.: 1
Mult.: 1
No
61 Position Socket (Female) 25-61 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 5P STRT CABLE PLUG PIN CRIMP SZ 11
Datasheet
29In Stock
Min.: 1
Mult.: 1
5 Position Pin (Male) 11-05 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 6P ST PLUG SOC SZ 17
Datasheet
93In Stock
Min.: 1
Mult.: 1
No
6 Position Without Socket Contacts 17-06 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 13P SIZE 11 WALL MOUNT RECEPTACLE PIN
Datasheet
60In Stock
Min.: 1
Mult.: 1
No
13 Position Pin (Male) 11-35 Receptacles 11 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 12P SIZE 15 WALL MOUNT RECEPTACLE PIN
Datasheet
50In Stock
Min.: 1
Mult.: 1
No
12 Position Pin (Male) 15-97 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A, 13 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 8P WL mnt recpt sz 13
Datasheet
24In Stock
Min.: 1
Mult.: 1

8 Position Pin (Male) 13-08 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 22P WL MNT PIN SZ 13
Datasheet
23In 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 Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 100P RCPT SZ 23 SKT WL MNT
Datasheet
11In Stock
Min.: 1
Mult.: 1

100 Position Socket (Female) 23-35 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 13P SIZE 11 JAM NUT RECEPTACLE SKT
Datasheet
20In 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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 3P ST PLUG SOC SZ 9
Datasheet
21In Stock
Min.: 1
Mult.: 1
No
3 Position Socket (Female) 09-98 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 10P PLG SZ 13 SKT CBL MNT
Datasheet
14In Stock
Min.: 1
Mult.: 1
No
10 Position Socket (Female) 13-98 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 11 PIN CBL MNT
Datasheet
29In Stock
Min.: 1
Mult.: 1
6 Position Pin (Male) 11-98 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 16P ST PLUG SOC SZ 21
Datasheet
13In Stock
Min.: 1
Mult.: 1

16 Position Socket (Female) 21-16 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy Composite 38999 Bulk
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
97In Stock
Min.: 1
Mult.: 1
No
6 Position Pin (Male) 09-35 Receptacles 9 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 5P WL MNT SOC SZ 15
Datasheet
21In Stock
Min.: 1
Mult.: 1
No
5 Position Socket (Female) 15-05 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 11 PIN CBL MNT
Datasheet
17In Stock
Min.: 1
Mult.: 1

6 Position Pin (Male) 11-98 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P st jam nut SZ 11
Datasheet
14In Stock
Min.: 1
Mult.: 1

6 Position Socket (Female) 11-98 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 4P PLG SZ 21 SKT CBL MNT
Datasheet
10In Stock
Min.: 1
Mult.: 1

4 Position Without Socket Contacts 21-75 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 46 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 18P SIZE 15 WALL MOUNT RECEPTACLE PIN
Datasheet
15In Stock
Min.: 1
Mult.: 1
No
18 Position Pin (Male) 15-18 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 37P WL mnt soc sz 15
Datasheet
12In Stock
Min.: 1
Mult.: 1
No
37 Position Socket (Female) 15-35 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy Composite 38999