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 (SGD) 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 66POS; size 19
Datasheet
26In Stock
147On Order
Min.: 1
Mult.: 1
66 Position Pin (Male) 19-35 Receptacles 19 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 66P Size 19 Wall Mount Receptacle
Datasheet
59In Stock
100Expected 29/9/2026
Min.: 1
Mult.: 1
No
66 Position Socket (Female) 19-35 Receptacles 19 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 11P FM SZ 21 PIN WL MNT
Datasheet
58In Stock
129On Order
Min.: 1
Mult.: 1
No
11 Position Pin (Male) 21-11 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 23 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 16P FM SZ 21 PIN WL MNT
Datasheet
30In Stock
Min.: 1
Mult.: 1
16 Position Pin (Male) 21-16 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 79P Size 21 Wall Mount Receptacle
Datasheet
23In Stock
100Expected 16/11/2026
Min.: 1
Mult.: 1
79 Position Pin (Male) 21-35 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 41P FM SZ 21 PIN WL MNT
Datasheet
95In Stock
100On Order
Min.: 1
Mult.: 1
41 Position Pin (Male) 21-41 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 41P RCPT SZ 21 SKT WL MNT
Datasheet
92In Stock
Min.: 1
Mult.: 1
No
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 Each
Amphenol Aerospace Circular MIL Spec Connector 55P FM SZ 23 SKT WL MNT
Datasheet
24In Stock
100Expected 11/11/2026
Min.: 1
Mult.: 1
No
55 Position Socket (Female) 23-55 Receptacles 23 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector SIZE 9; 3 PIN CRIMP JAM NUT RECEPT
Datasheet
69In Stock
Min.: 1
Mult.: 1
3 Position Socket (Female) 09-98 Receptacles 9 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 8P RCPT SZ 13 SKT PNL MNT
Datasheet
48In Stock
100Expected 9/11/2026
Min.: 1
Mult.: 1
8 Position Socket (Female) 13-08 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 79P RCPT SZ 21 PIN PNL MNT
Datasheet
13In Stock
114On Order
Min.: 1
Mult.: 1
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 41P FM SZ 21 PIN PNL MNT
Datasheet
91In Stock
Min.: 1
Mult.: 1
41 Position Pin (Male) 21-41 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 3P SZ 9 RCPT PNL MNT PIN
Datasheet
18In Stock
100Expected 3/11/2026
Min.: 1
Mult.: 1
No
3 Position Pin (Male) 09-98 Receptacles 9 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 3P FM SZ 9 SKT PNL MNT
Datasheet
98In Stock
Min.: 1
Mult.: 1
No
3 Position Socket (Female) 09-98 Receptacles 9 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum


Amphenol Aerospace Circular MIL Spec Connector TV 3C 3#20 SKT RCPT ALUMINUM
Datasheet
142In Stock
100Expected 23/10/2026
Min.: 1
Mult.: 1
No
3 Position Socket (Female) 09-98 Receptacles 9 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 2P FM SZ 11 SKT PNL MNT
Datasheet
97In Stock
122Expected 2/9/2026
Min.: 1
Mult.: 1
No
2 Position Socket (Female) 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 13P SIZE 11 PANEL MOUNT PIN
Datasheet
97In 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 5P FM SZ 11 PIN PNL MNT
Datasheet
89In Stock
100Expected 26/10/2026
Min.: 1
Mult.: 1
No
5 Position Pin (Male) 11-05 Receptacles 11 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P RCPT SZ 11 PIN PNL MNT
Datasheet
83In Stock
292On Order
Min.: 1
Mult.: 1
No
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 7P JAM NUT SOC SZ 11
Datasheet
49In Stock
100Expected 5/11/2026
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 FM SZ 13 PIN PNL MNT
Datasheet
60In Stock
306On Order
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
94In Stock
203On Order
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 Bulk
Amphenol Aerospace Circular MIL Spec Connector 8P FM SZ 13 PIN PNL MNT
Datasheet
219In Stock
154Expected 6/10/2026
Min.: 1
Mult.: 1
No
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 8P RCPT SZ 13 SKT PNL MNT
Datasheet
42In Stock
71Expected 6/10/2026
Min.: 1
Mult.: 1
No
8 Position Socket (Female) 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 10P FM SZ 13 PIN PNL MNT
Datasheet
273In Stock
Min.: 1
Mult.: 1
No
10 Position Pin (Male) 13-98 Receptacles 13 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum