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 128P SZ 25 PLUG CBL MNT SKT
Datasheet
1In Stock
Min.: 1
Mult.: 1

128 Position Socket (Female) 25-35 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 43P PLG SZ 25 PIN CBL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
43 Position Pin (Male) 25-43 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 61P SIZE 25 STRAIGHT PLUG PIN
Datasheet
25In Stock
Min.: 1
Mult.: 1

61 Position Pin (Male) 25-61 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 61P SIZE 25 STRAIGHT PLUG SKT
Datasheet
2In Stock
Min.: 1
Mult.: 1
61 Position Socket (Female) 25-61 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 9 PIN CBL MNT
Datasheet
4In Stock
Min.: 1
Mult.: 1

6 Position Pin (Male) 09-35 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 3P PLG SZ 9S KT CBL MNT
Datasheet
6In Stock
Min.: 1
Mult.: 1

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 5P PLG SZ 11 SKT CBL MNT
Datasheet
8In Stock
Min.: 1
Mult.: 1

5 Position Socket (Female) 11-05 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 6P ST PLUG PIN SZ 11
Datasheet
1In 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 Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 22P PLG SZ 13 SKT CBL MNT
Datasheet
8In Stock
25Expected 29/06/2026
Min.: 1
Mult.: 1
22 Position Socket (Female) 13-35 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 22P SZ 13 PLUG CBL MNT SKT
Datasheet
4In Stock
Min.: 1
Mult.: 1

22 Position Socket (Female) 13-35 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 4P ST PLUG PIN SZ 13
Datasheet
6In Stock
Min.: 1
Mult.: 1
4 Position Pin (Male) 13-04 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 18P PLG SZ 15 SKT CBL MNT
Datasheet
4In Stock
Min.: 1
Mult.: 1
18 Position Socket (Female) 15-18 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 26P SIZE 17 STRAIGHT PLUG PIN
Datasheet
8In Stock
Min.: 1
Mult.: 1

26 Position Pin (Male) 17-26 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 26P SIZE 17 STRAIGHT PLUG PIN
Datasheet
1In Stock
25Expected 17/04/2026
Min.: 1
Mult.: 1

26 Position Pin (Male) 17-26 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 8P SIZE 17 STRAIGHT PLUG SOCKET
Datasheet
2In Stock
25On Order
Min.: 1
Mult.: 1

8 Position Socket (Female) 17-08 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 11P ST PLUG PIN SZ 21
Datasheet
2In Stock
25Expected 31/08/2026
Min.: 1
Mult.: 1

11 Position Pin (Male) 21-11 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy Composite 38999 Bulk
Amphenol Aerospace Circular MIL Spec Connector 5P SIZE 11 STRAIGHT PLUG SOCKET
Datasheet
2In Stock
Min.: 1
Mult.: 1
5 Position Socket (Female) 11-05 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 10P SZ 13 PLUG CBL MNT SKT
Datasheet
3In Stock
Min.: 1
Mult.: 1

10 Position Socket (Female) 13-98 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 6P SIZE 17 STRAIGHT PLUG PIN
Datasheet
5In Stock
Min.: 1
Mult.: 1
6 Position Pin (Male) 17-06 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 30P SIZE 25 STRAIGHT PLUG PIN
Datasheet
83In Stock
Min.: 1
Mult.: 1
No
30 Position Pin (Male) 25-20 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A, 23 A, 46 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 11P WL MNT SOC SZ 21
Datasheet
13In Stock
Min.: 1
Mult.: 1

11 Position Socket (Female) 21-11 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 19P RCPT SZ 25 PIN WL MNT
Datasheet
10In Stock
Min.: 1
Mult.: 1

19 Position Pin (Male) 25-19 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 23 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 19P ST WL MNT SZ 25
Datasheet
9In Stock
Min.: 1
Mult.: 1

19 Position Socket (Female) 25-19 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 128P RCPT SZ 25 PIN WL MNT
Datasheet
12In Stock
Min.: 1
Mult.: 1

128 Position Pin (Male) 25-35 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 24P SZ 25 PLUG CBL MNT PIN
Datasheet
40In Stock
Min.: 1
Mult.: 1

24 Position Pin (Male) 25-24 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 13 A, 23 A Gold Copper Alloy 38999 Aluminum Each