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
Contact Gender
Insert Arrangement
Product
Shell Size
Shell Style
MIL Type
Termination Style
Mounting Style
Current Rating
Contact Plating
Contact Material
Series
Packaging
Amphenol Aerospace Circular MIL Spec Connector 61P PLG SZ 25 SKT CBL MNT
Datasheet
5In 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 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 99P Sz 25 St Cable Plug Stainless Steel
Datasheet
4Expected 10/08/2026
Min.: 1
Mult.: 1

99 Position Pin (Male) 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 18P PLG SZ 15 PIN CBL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
18 Position Pin (Male) 15-18 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999 Each
Amphenol Aerospace Circular MIL Spec Connector 23P SIZE 17 PIN CABLE MOUNT PLUG
Datasheet
8In Stock
Min.: 1
Mult.: 1
No
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 Each
Amphenol Aerospace Circular MIL Spec Connector 41P PLG SZ 21 SKT CBL MNT
Datasheet
9In Stock
Min.: 1
Mult.: 1
No
41 Position Socket (Female) 21-41 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 2P ST PLUG SOC SZ 11
Datasheet
2In Stock
Min.: 1
Mult.: 1
2 Position Socket (Female) 11-02 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy Composite 38999 Each
Amphenol Aerospace Circular MIL Spec Connector 3P PLG SZ 9 PIN CBL MNT
Datasheet
70On Order
Min.: 1
Mult.: 1
No
3 Position Pin (Male) 09-98 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 3P PLG SZ 9 PIN CBL MNT
Datasheet
12Expected 20/04/2026
Min.: 1
Mult.: 1
No
3 Position Pin (Male) 09-98 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 3P PLG SZ 9 SKT CBL MNT
Datasheet
29On Order
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 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 3P ST PLUG SZ 9
Datasheet
9On Order
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 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 13P PLG SZ 11 PIN CBL MNT
Datasheet
10Expected 09/03/2026
Min.: 1
Mult.: 1
No
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 15P ST PLUG SOC SZ 15
Datasheet
6In Stock
Min.: 1
Mult.: 1
No
15 Position Socket (Female) 15-15 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 18P PLG SZ 15 PIN CBL MNT
Datasheet
20Expected 20/04/2026
Min.: 1
Mult.: 1
No
18 Position Pin (Male) 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 5P ST PLUG PIN SZ 15
Datasheet
7In Stock
Min.: 1
Mult.: 1
No
5 Position Pin (Male) 15-05 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 11P SZ 19 CBL MNT PIN
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
11 Position Pin (Male) 19-11 Plugs 19 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 32P SIZE 19 STRAIGHT PLUG SKT
Datasheet
28Expected 01/05/2026
Min.: 1
Mult.: 1
No
32 Position Socket (Female) 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 TRI-START ALUMINUM
Datasheet
15On Order
Min.: 1
Mult.: 1
No
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 79P ST PLUG PIN SZ 21
Datasheet
162On Order
Min.: 1
Mult.: 1
No
79 Position Pin (Male) 21-35 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 39P SIZE 21 STRAIGHT PLUG PIN
Datasheet
5Expected 20/04/2026
Min.: 1
Mult.: 1

39 Position Pin (Male) 21-39 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 21P st plug soc sz 23
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
21 Position Without Socket Contacts 23-21 Plugs 23 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 19P SIZE 25 STRAIGHT PLUG PIN
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
19 Position Without Pin Contacts 25-19 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 19P st plug pin sz 25
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
19 Position Pin (Male) 25-19 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 24P SIZE 25 STRAIGHT PLUG PIN
Datasheet
4Expected 09/03/2026
Min.: 1
Mult.: 1
No
24 Position Pin (Male) 25-24 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 13 A, 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 61P SIZE 25 STRAIGHT PLUG PIN
Datasheet
25Expected 20/04/2026
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 61P st plug soc sz 25
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
61 Position Socket (Female) 25-61 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum Each