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
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Contact Material
Series
Packaging
Amphenol Aerospace Circular MIL Spec Connector 18P RCPT SZ 15 PIN PNL MNT
Datasheet
5Expected 06/04/2026
Min.: 1
Mult.: 1

18 Position Pin (Male) 15-18 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 19P RCPT SZ 15 PIN PNL MNT
Datasheet
18Expected 26/08/2026
Min.: 1
Mult.: 1

19 Position Pin (Male) 15-19 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 12P RCPT SZ 15 SKT PNL MNT
Datasheet
6Expected 20/03/2026
Min.: 1
Mult.: 1

12 Position Socket (Female) 15-97 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 66P jam nut pin sz 19
Datasheet
8Expected 02/03/2026
Min.: 1
Mult.: 1

66 Position Pin (Male) 19-35 Receptacles 19 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 11P SZ 21 RCPT PNL MNT SKT
Datasheet
17Expected 06/07/2026
Min.: 1
Mult.: 1

11 Position Socket (Female) 21-11 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 37P SIZE 15 JAM NUT RECEPTACLE PIN
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
37 Position Pin (Male) 15-35 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 6P jam nut pin sz 11
Datasheet
7In Stock
Min.: 1
Mult.: 1
6 Position Pin (Male) 11-98 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 2P FM SZ 11 PIN PNL MNT
Datasheet
13Expected 02/03/2026
Min.: 1
Mult.: 1

2 Position Pin (Male) 11-02 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 22P SIZE 13 JAM NUT RECEPTACLE SKT
Datasheet
5In Stock
Min.: 1
Mult.: 1
No
22 Position Socket (Female) 13-35 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 23P SIZE 17 JAM NUT RECEPTACLE PIN
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
23 Position Pin (Male) 17-99 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 100P FM SZ 23 PIN PNL MNT
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
100 Position Pin (Male) 23-35 Receptacles 23 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 56P RCPT SZ 25 SKT PNL MNT
Datasheet
9In Stock
Min.: 1
Mult.: 1
No
56 Position Socket (Female) 25-04 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 7P PLG SZ 11 SKT CBL MNT
Datasheet
7Expected 11/05/2026
Min.: 1
Mult.: 1

7 Position Socket (Female) 11-99 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 18P PLG SZ 15 PIN CBL MNT
Datasheet
33Expected 10/08/2026
Min.: 1
Mult.: 1

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 TRI-START ALUMINUM
Datasheet
39In Stock
8Expected 24/03/2026
Min.: 1
Mult.: 1

19 Position Pin (Male) 15-19 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 5P PLG SZ 15 PIN CBL MNT
Datasheet
7Expected 20/03/2026
Min.: 1
Mult.: 1

5 Position Pin (Male) 15-05 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 12P PLG SZ 15 SKT CBL MNT
Datasheet
99On Order
Min.: 1
Mult.: 1

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 PLG SZ 17 PIN CBL MNT
Datasheet
37In Stock
Min.: 1
Mult.: 1

55 Position Pin (Male) 17-35 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 17 SKT CBL MNT
Datasheet
5On Order
Min.: 1
Mult.: 1

6 Position Socket (Female) 17-06 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 79P PLG PIN
Datasheet
5Expected 20/03/2026
Min.: 1
Mult.: 1

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 79P SIZE 21 STRAIGHT PLUG PIN
Datasheet
5Expected 09/03/2026
Min.: 1
Mult.: 1

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 79P SIZE 21 STRAIGHT PLUG SKT
Datasheet
3Expected 05/03/2026
Min.: 1
Mult.: 1

79 Position Socket (Female) 21-35 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 55P ST PLUG PIN SZ 23
Datasheet
15Expected 26/08/2026
Min.: 1
Mult.: 1

55 Position Pin (Male) 23-55 Plugs 23 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 30P SIZE 25 STRAIGHT PLUG PIN
Datasheet
4Expected 20/04/2026
Min.: 1
Mult.: 1

30 Position Pin (Male) 25-20 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A, 23 A, 46 A Gold Copper Alloy 38999 Aluminum Each
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