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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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Number of Positions
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Product
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Shell Style
MIL Type
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Amphenol Aerospace Circular MIL Spec Connector 15P PLG SZ 15 PIN CBL MNT
Datasheet
8In Stock
100Expected 11/11/2026
Min.: 1
Mult.: 1

15 Position Pin (Male) 15-15 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector MS/TRI-START ALUMINUM
Datasheet
12In Stock
100Expected 8/24/2026
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 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 19P ST PLUG SOC SZ 15
Datasheet
4In Stock
Min.: 1
Mult.: 1

19 Position Socket (Female) 15-19 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 26P SIZE 17 PIN CABLE MOUNT PLUG
Datasheet
1In 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 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 55P PLG SZ 17 SKT CBL MNT
Datasheet
6In Stock
Min.: 1
Mult.: 1

55 Position Socket (Female) 17-35 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 32P SIZE 19 STRAIGHT PLUG PIN
Datasheet
15In Stock
200On Order
Min.: 1
Mult.: 1

32 Position Pin (Male) 19-32 Plugs 19 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 66P ST PLUG SOC SZ 19
Datasheet
3In Stock
Min.: 1
Mult.: 1

66 Position Socket (Female) 19-35 Plugs 19 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 11P PIN PLUG
Datasheet
3In Stock
Min.: 1
Mult.: 1

11 Position Pin (Male) 21-11 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 11P SIZE 21 SOCKET CABLE MOUNT PLUG
Datasheet
8In Stock
Min.: 1
Mult.: 1

11 Position Socket (Female) 21-11 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 4P PLG SZ 21 SKT CBL MNT
Datasheet
8In 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 100P SIZE 23 STRAIGHT PLUG PIN
Datasheet
2In Stock
Min.: 1
Mult.: 1

100 Position Pin (Male) 23-35 Plugs 23 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 128P PLG SZ 25 PIN CBL MNT
Datasheet
7In Stock
Min.: 1
Mult.: 1

128 Position Pin (Male) 25-35 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 61P ST PLUG SZ 25
Datasheet
11In 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 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector JAM NUT HERMETIC PIN
Datasheet
10In Stock
52On Order
Min.: 1
Mult.: 1

37 Position Pin (Male) 15-35 Receptacles 15 Jam Nut MIL-DTL-38999 III Solder Panel 3 A Gold Copper Alloy Hermetics
Amphenol Aerospace Circular MIL Spec Connector 6P RCPT SCKT
Datasheet
21In Stock
Min.: 1
Mult.: 1
No
6 Position Socket (Female) 09-35 Receptacles 9 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 3P RCPT SZ 9 SKT WL MNT
Datasheet
22In Stock
Min.: 1
Mult.: 1
No
3 Position Socket (Female) 09-98 Receptacles 9 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
22In 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 13P RCPT SKT WL MNT
Datasheet
19In Stock
25Expected 12/28/2026
Min.: 1
Mult.: 1
No
13 Position Socket (Female) 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 6P FM SZ 11 SKT WL MNT
Datasheet
24In Stock
Min.: 1
Mult.: 1
No
6 Position Socket (Female) 11-98 Receptacles 11 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 22P FM SZ 13 PIN WL MNT
Datasheet
42In Stock
Min.: 1
Mult.: 1
No
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 STRAIGHT PLUG; TV-R
Datasheet
56In Stock
Min.: 1
Mult.: 1
No
37 Position Pin (Male) 15-35 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 26P FM SZ 17 PIN WL MNT
Datasheet
25In Stock
Min.: 1
Mult.: 1
No
26 Position Pin (Male) 17-26 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
30In Stock
Min.: 1
Mult.: 1
No
55 Position Pin (Male) 17-35 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 55P FEMALE
Datasheet
12In Stock
Min.: 1
Mult.: 1
No
55 Position Socket (Female) 17-35 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 6P WL MNT PIN SZ 17
Datasheet
34In Stock
Min.: 1
Mult.: 1
No
6 Position Pin (Male) 17-06 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 23 A Gold Copper Alloy Composite 38999