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 11P FM SZ 21 PIN WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1

11 Position Pin (Male) 21-11 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 79P WL mnt soc sz 21
Datasheet
2In Stock
Min.: 1
Mult.: 1
79 Position Socket (Female) 21-35 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 41P RCPT SZ 21 SKT WL MNT
Datasheet
3In Stock
25Expected 20/04/2026
Min.: 1
Mult.: 1
41 Position Socket (Female) 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 24P RCPT SZ 25 PIN WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1

24 Position Pin (Male) 25-24 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 13 A, 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P FM SZ 9 SKT WL MNT
Datasheet
7In Stock
19Expected 25/02/2026
Min.: 1
Mult.: 1
No
6 Position Socket (Female) 09-35 Receptacles 9 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 3P RCPT SZ 9 PIN WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
3 Position Pin (Male) 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 13P FM SZ 11 PIN WL MNT
Datasheet
2In Stock
8Expected 23/02/2026
Min.: 1
Mult.: 1
No
13 Position Pin (Male) 11-35 Receptacles 11 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 13P SIZE 11 WALL MOUNT RECEPTACLE PIN
Datasheet
5In Stock
Min.: 1
Mult.: 1
No
13 Position Pin (Male) 11-35 Receptacles 11 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P WL mnt pin sz 11
Datasheet
3In 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 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 22P RCPT SZ 13 PIN WL MNT
Datasheet
10In Stock
31Expected 09/03/2026
Min.: 1
Mult.: 1
No
22 Position Pin (Male) 13-35 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 22P RCPT SZ 13 SKT WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
22 Position Socket (Female) 13-35 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 4P WL mnt;soc sz 13
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
4 Position Socket (Female) 13-04 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 18P RCPT SZ 15 SCKT WL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
18 Position Socket (Female) 15-18 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 19P FM SZ 15 PIN WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
19 Position Pin (Male) 15-19 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 37P FM SZ 15 PIN WL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
37 Position Pin (Male) 15-35 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 37P RCPT SZ 15 PIN WL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
37 Position Pin (Male) 15-35 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 37P SIZE 15 WALL MOUNT RECEPTACLE PIN
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
37 Position Pin (Male) 15-35 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 5P RCPT SZ 15 PIN WL MNT
Datasheet
5In Stock
Min.: 1
Mult.: 1
No
5 Position Pin (Male) 15-05 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 55P FM SZ 17 PIN WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
55 Position Pin (Male) 17-35 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
55 Position Socket (Female) 17-35 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P ST WL MNT SZ 17
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
6 Position Pin (Male) 17-06 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P RCPT SZ 17 PIN WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
6 Position Pin (Male) 17-06 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 11P FM SZ 21 SKT WL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
11 Position Socket (Female) 21-11 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 16P FM SZ 21 PIN WL MNT
Datasheet
5In Stock
Min.: 1
Mult.: 1
16 Position Pin (Male) 21-16 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 79P WL MNT PIN SZ 21
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
79 Position Pin (Male) 21-35 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum