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 (IDR) 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
Shell Size
Shell Style
MIL Type
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Current Rating
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Contact Material
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Packaging
Amphenol Aerospace Circular MIL Spec Connector 39P PLG SZ 21 PIN CBL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
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 41P st plug soc SZ 21
Datasheet
2In Stock
15Expected 20/04/2026
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 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 41P st plug soc SZ 21
Datasheet
2In 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 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 4P SZ 21 CBL MNT SOC
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
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 21P PLG SZ 23 SKT CBL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
21 Position Socket (Female) 23-21 Plugs 23 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 128P SIZE 25 STRAIGHT PLUG 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 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector size 25 128 pin STRAIGHT PLUG
Datasheet
2In Stock
24Expected 20/04/2026
Min.: 1
Mult.: 1
No
128 Position Socket (Female) 25-35 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 43P st plug pin sz 25
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
43 Position Pin (Male) 25-43 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 61P PLG SZ 25 PIN CBL MNT
Datasheet
3In 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 Bulk
Amphenol Aerospace Circular MIL Spec Connector 8P SZ 25 CBL MNT PIN
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
8 Position Without Pin Contacts 25-08 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 46 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P RCPT SZ 11 PIN WL MNT
Datasheet
16In Stock
Min.: 1
Mult.: 1
No
6 Position Pin (Male) 11-98 Receptacles 11 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy Composite 38999 Bulk
Amphenol Aerospace Circular MIL Spec Connector 10P SIZE 13 WALL MOUNT RECEPTACLE PIN
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
10 Position Pin (Male) 13-98 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 26P FM SZ 17 PIN WL MNT
Datasheet
7In Stock
Min.: 1
Mult.: 1
No
26 Position Pin (Male) 17-26 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 6P FM SZ 17 SKT WL MNT
Datasheet
6In Stock
25Expected 02/06/2026
Min.: 1
Mult.: 1
No
6 Position Socket (Female) 17-06 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 100P RCPT SZ 23 SKT WL MNT
Datasheet
8In Stock
Min.: 1
Mult.: 1
No
100 Position Socket (Female) 23-35 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Panel Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 6P SIZE 9 WALL MOUNT RECEPTACLE PIN
Datasheet
5In Stock
Min.: 1
Mult.: 1
6 Position Pin (Male) 09-35 Receptacles 9 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 13P RCPT SZ 11 SKT WL MNT
Datasheet
9In Stock
Min.: 1
Mult.: 1

13 Position Socket (Female) 11-35 Receptacles 11 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 6P WL MNT SOC SZ 11
Datasheet
10In Stock
7Expected 06/07/2026
Min.: 1
Mult.: 1

6 Position Socket (Female) 11-98 Receptacles 11 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 22P WL MNT PIN SZ 13
Datasheet
1In Stock
Min.: 1
Mult.: 1

22 Position Pin (Male) 13-35 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 10P WL MNT PIN SZ 13
Datasheet
11In Stock
Min.: 1
Mult.: 1

10 Position Pin (Male) 13-98 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 10P SZ 13 WALL MOUNT SOCKET
Datasheet
1In Stock
25Expected 17/06/2026
Min.: 1
Mult.: 1
10 Position Socket (Female) 13-98 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy Composite 38999 Each
Amphenol Aerospace Circular MIL Spec Connector 3P st WL mount sz 9
Datasheet
16In Stock
Min.: 1
Mult.: 1
No
3 Position Socket (Female) 09-98 Receptacles 9 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector WL mnt recpt sz 11 solder pin cont
Datasheet
34In Stock
135On Order
Min.: 1
Mult.: 1
No
5 Position Pin (Male) 11-05 Receptacles 11 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 61P SIZE 25 JAM NUT RECEPTACLE SKT
Datasheet
2In Stock
Min.: 1
Mult.: 1
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 26P SIZE 17 JAM NUT RECEPTACLE PIN
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
26 Position Pin (Male) 17-26 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy Composite 38999