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 6P FM SZ 11 SKT PNL MNT
Datasheet
1In Stock
9Expected 14/07/2026
Min.: 1
Mult.: 1
No
6 Position Socket (Female) 11-98 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 22P JAM NUT RECPT SZ 13
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
22 Position Without Socket Contacts 13-35 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 22P RCPT SZ 13 PIN PNL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
22 Position Pin (Male) 13-35 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 22P FM SZ 13 SKT PNL MNT
Datasheet
1In 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
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
1In Stock
7Expected 20/04/2026
Min.: 1
Mult.: 1
15 Position Pin (Male) 15-15 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 18P FM SZ 15 PIN PNL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
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
1In Stock
Min.: 1
Mult.: 1
No
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 19P JAM NUT SOC SZ 15
Datasheet
2In Stock
6Expected 15/05/2026
Min.: 1
Mult.: 1
No
19 Position Socket (Female) 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 6P JAM NUT PIN SZ 17
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
6 Position Pin (Male) 17-06 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
1In Stock
5On Order
Min.: 1
Mult.: 1
No
23 Position Socket (Female) 17-99 Receptacles 17 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 SOC SZ 19
Datasheet
2In Stock
Min.: 1
Mult.: 1
66 Position Socket (Female) 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 FM SZ 21 PIN PNL MNT
Datasheet
2In Stock
20Expected 03/03/2026
Min.: 1
Mult.: 1
No
11 Position Pin (Male) 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 TRI-START ALUMINUM
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
41 Position Socket (Female) 21-41 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 53P RCPT SZ 23 PIN PNL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
53 Position Pin (Male) 23-53 Receptacles 23 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 19P SZ 25 RCPT PNL MNT PIN
Datasheet
1In Stock
3Expected 14/04/2026
Min.: 1
Mult.: 1
No
19 Position Pin (Male) 25-19 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 19P SZ 25 RCPT PNL MNT SKT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
19 Position Socket (Female) 25-19 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 128P SZ 25 RCPT PNL MNT SKT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
128 Position Without Socket Contacts 25-35 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
128 Position Socket (Female) 25-35 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 43P JAM NUT SOC SZ 25
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
43 Position Socket (Female) 25-43 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 56P RCPT SZ 25 SKT PNL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
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 Bulk
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 9 PIN CBL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1

6 Position Pin (Male) 09-35 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 2P ST PLUG PIN SZ 11
Datasheet
1In Stock
Min.: 1
Mult.: 1

2 Position Pin (Male) 11-02 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 13P SZ 11 PLUG CBL MNT PIN
Datasheet
2In 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 13P SIZE 11 STRAIGHT PLUG PIN
Datasheet
3In 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 TRI-START ALUMINUM
Datasheet
1In Stock
Min.: 1
Mult.: 1
13 Position Socket (Female) 11-35 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum