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 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
Amphenol Aerospace Circular MIL Spec Connector 4P JAM NUT SOC SZ 13
Datasheet
7In 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 Each
Amphenol Aerospace Circular MIL Spec Connector 10P; SZ 13 JAM NUT RECPT
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
10 Position Without Pin Contacts 13-98 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 15P JAM NUT SOC SZ 15
Datasheet
6In Stock
Min.: 1
Mult.: 1
No
15 Position Socket (Female) 15-15 Receptacles 15 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 15P RCPT SZ 15 SKT PNL MNT
Datasheet
8In Stock
Min.: 1
Mult.: 1
No
15 Position Socket (Female) 15-15 Receptacles 15 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 18P SZ 15 RCPT PNL MNT SKT
Datasheet
7In Stock
Min.: 1
Mult.: 1
No
18 Position Socket (Female) 15-18 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 37P SIZE 15 JAM NUT RECEPTACLE SKT
Datasheet
7In Stock
15Expected 21/04/2026
Min.: 1
Mult.: 1
No
37 Position Socket (Female) 15-35 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 37P FM SZ 15 SKT PNL MNT
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
37 Position Socket (Female) 15-35 Receptacles 15 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 12P SZ 15 PANEL MOUNT PIN
Datasheet
5In Stock
Min.: 1
Mult.: 1
No
12 Position Pin (Male) 15-97 Receptacles 15 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 26P JAM NUT SOC SZ 17
Datasheet
6In 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 8P Sz 17 Jam Nut Receptacle OD Cad
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
8 Position Socket (Female) 17-08 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 11P SZ 19 RCPT PNL MNT PIN
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
11 Position Without Pin Contacts 19-11 Receptacles 19 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 11P SZ 21 PANEL MNT PIN
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
11 Position Without Pin Contacts 21-11 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 23 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 16P RCPT SZ 21 SKT PNL MNT
Datasheet
8In Stock
Min.: 1
Mult.: 1
No
16 Position Socket (Female) 21-16 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 79P JAM NUT SOC SZ 21
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
79 Position Without Socket Contacts 21-35 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 79P FM SZ 21 PIN PNL MNT
Datasheet
9In Stock
Min.: 1
Mult.: 1
No
79 Position Pin (Male) 21-35 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 21P SIZE 23 SOCKET PANEL MOUNT RECPT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
21 Position Socket (Female) 23-21 Receptacles 23 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 19P JAM NUT PIN SZ 25
Datasheet
4In Stock
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 Each
Amphenol Aerospace Circular MIL Spec Connector 30P SIZE 25 JAM NUT RECEPTACLE SKT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
30 Position Socket (Female) 25-20 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A, 23 A, 46 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 30P SIZE 25 JAM NUT RECEPTACLE SKT
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
30 Position Socket (Female) 25-20 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A, 23 A, 46 A Gold Copper Alloy 38999 Aluminum Each