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 66P SIZE 19 WALL MOUNT RECEPTACLE PIN
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
66 Position Without Pin Contacts 19-35 Receptacles 19 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 66P SZ 19 WALL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
66 Position Without Socket Contacts 19-35 Receptacles 19 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 16P RCPT SZ 21 SCKT WL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
16 Position Without Socket Contacts 21-16 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 16P WL MNT SOC SZ 21
Datasheet
7In Stock
Min.: 1
Mult.: 1
No
16 Position Socket (Female) 21-16 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
2In Stock
7Expected 15/07/2026
Min.: 1
Mult.: 1
No
16 Position Socket (Female) 21-16 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 79P FM SZ 21 PIN WL MNT
Datasheet
6In Stock
Min.: 1
Mult.: 1
No
79 Position Without Pin Contacts 21-35 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 79P ST WL MNT SZ 21
Datasheet
7In Stock
Min.: 1
Mult.: 1
No
79 Position Without Socket Contacts 21-35 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 41P WL MNT SOC SZ 21
Datasheet
6In Stock
Min.: 1
Mult.: 1
No
41 Position Socket (Female) 21-41 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 100P SIZE 23 WALL MOUNT RECEPTACLE SKT
Datasheet
7In Stock
Min.: 1
Mult.: 1
No
100 Position Without Socket Contacts 23-35 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 53P RCPT SZ 23 PIN WL MNT
Datasheet
8In Stock
Min.: 1
Mult.: 1
No
53 Position Pin (Male) 23-53 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 53P FM SZ 23 SKT WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
53 Position Socket (Female) 23-53 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 55P FM SZ 23 SKT WL MNT
Datasheet
8In Stock
Min.: 1
Mult.: 1
No
55 Position Socket (Female) 23-55 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 19P RCPT SZ 25 PIN WL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
19 Position Pin (Male) 25-19 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 128P RCPT SZ 25 PIN WL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
128 Position Without Pin Contacts 25-35 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 128P SIZE 25 WALL MOUNT RECEPTACLE PIN
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
128 Position Without Pin Contacts 25-35 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 8P RCPT SZ 25 SKT WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
8 Position Socket (Female) 25-08 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Panel 46 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 6P FM SZ 11 PIN PNL MNT
Datasheet
4In Stock
11Expected 04/03/2026
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 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 8P FM SZ 13 PIN PNL MNT
Datasheet
25In Stock
Min.: 1
Mult.: 1
8 Position Pin (Male) 13-08 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 26P SZ 17 RCPT PNL MNT SKT
Datasheet
1In Stock
Min.: 1
Mult.: 1
26 Position Socket (Female) 17-26 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 55P RCPT SZ 17 PIN PNL MNT
Datasheet
67Expected 02/03/2026
Min.: 1
Mult.: 1

55 Position Pin (Male) 17-35 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 13P SZ 11 FEM PNL MNT PIN
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
13 Position Pin (Male) 11-35 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P SZ 11 FEM PNL MNT SKT
Datasheet
8In Stock
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 7P JAM NUT SOC SZ 11
Datasheet
21In Stock
Min.: 1
Mult.: 1
No
7 Position Socket (Female) 11-99 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 4P SIZE 13 STRAIGHT JAM NUT PIN
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
4 Position Pin (Male) 13-04 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 4P FM SZ 13 SKT PNL MNT
Datasheet
19In Stock
Min.: 1
Mult.: 1
No
4 Position Socket (Female) 13-04 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum