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 (JPY) 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
Termination Style
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Contact Material
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Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
30In Stock
Min.: 1
Mult.: 1

13 Position Pin (Male) 11-35 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 23P Size 17 Straight Plug
Datasheet
18In Stock
Min.: 1
Mult.: 1
23 Position Pin (Male) 17-99 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 11P ST PLUG PIN SZ 21
Datasheet
22In 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 Composite 38999 Bulk
Amphenol Aerospace Circular MIL Spec Connector 13P PLG SZ 11 PIN CBL MNT
Datasheet
101In Stock
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 18P PLG SZ 15 SKT CBL MNT
Datasheet
40In Stock
Min.: 1
Mult.: 1
No
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 PLG STR MTL OCD 1597SN
Datasheet
210In Stock
496Expected 1/25/2027
Min.: 1
Mult.: 1
No
12 Position Socket (Female) 15-97 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 55P Size 17 Straight Plug
Datasheet
86In Stock
Min.: 1
Mult.: 1
No
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 8P PLG SZ 17 SKT CBL MNT
Datasheet
87In Stock
Min.: 1
Mult.: 1
No
8 Position Socket (Female) 17-08 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 41P SIZE 21 STRAIGHT PLUG PIN
Datasheet
80In Stock
Min.: 1
Mult.: 1
No
41 Position Pin (Male) 21-41 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 7P SIZE 25 STRAIGHT PLUG SOCKET
Datasheet
20In Stock
Min.: 1
Mult.: 1
No
99 Position Socket (Female) 25-07 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 5 A, 46 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P RCPT SZ 9 SKT WL MNT
Datasheet
25In Stock
Min.: 1
Mult.: 1

6 Position Socket (Female) 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 10 pin Sz 13 Wall Mnt Recpt;TRI-START
Datasheet
23In Stock
Min.: 1
Mult.: 1

10 Position Pin (Male) 13-98 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 TRI-START ALUMINUM
Datasheet
524On Order
Min.: 1
Mult.: 1

6 Position Pin (Male) 17-06 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
100Expected 12/14/2026
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
Amphenol Aerospace Circular MIL Spec Connector 41P FM SZ 21 PIN WL MNT
Datasheet
5In Stock
100Expected 11/18/2026
Min.: 1
Mult.: 1

41 Position Pin (Male) 21-41 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 30P SIZE 25 WALL MOUNT RECEPTACLE SKT
Datasheet
6In Stock
Min.: 1
Mult.: 1
30 Position Socket (Female) 25-20 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A, 13 A, 23 A, 46 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 128P WL MNT SOC SZ 25
Datasheet
10In 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 61P RCPT SZ 25 PIN WL MNT
Datasheet
8In Stock
Min.: 1
Mult.: 1
61 Position Pin (Male) 25-61 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 10P SZ 13 WALL MNT RECEPTACLE
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
10 Position Pin (Male) 13-98 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy Composite 38999 Each
Amphenol Aerospace Circular MIL Spec Connector 10P SIZE 13 WALL MOUNT RECEPTACLE SKT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
10 Position Socket (Female) 13-98 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy Composite 38999 Each
Amphenol Aerospace Circular MIL Spec Connector 19P SIZE 15 WALL MOUNT RECEPTACLE SKT
Datasheet
7In Stock
Min.: 1
Mult.: 1
No
19 Position Socket (Female) 15-19 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy Composite 38999 Each
Amphenol Aerospace Circular MIL Spec Connector 79P FM SZ 21 PIN WL MNT
Datasheet
9In Stock
Min.: 1
Mult.: 1
No
79 Position Pin (Male) 21-35 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 39P FM SZ 21 PIN WL MNT
Datasheet
15In Stock
Min.: 1
Mult.: 1
No
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 Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 53P WL mnt recpt sz 23
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
53 Position Socket (Female) 23-53 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 56P FM SZ 25 PIN WL MNT
Datasheet
8In Stock
Min.: 1
Mult.: 1
No
56 Position Pin (Male) 25-04 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A, 13 A Gold Copper Alloy Composite 38999 Each