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 (JPY) 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 41P PLG SZ 21 PIN CBL MNT
Datasheet
10In Stock
Min.: 1
Mult.: 1
No
41 Position Pin (Male) 21-41 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 21P PLG SZ 23 PIN CBL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
21 Position Pin (Male) 23-21 Plugs 23 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 100P PLG SZ 23 SKT CBL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
100 Position Socket (Female) 23-35 Plugs 23 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 19P st plug pin sz 25
Datasheet
8In Stock
Min.: 1
Mult.: 1
No
19 Position Pin (Male) 25-19 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 19P PLG SZ 25 PIN CBL MNT
Datasheet
10In Stock
136On Order
Min.: 1
Mult.: 1
No
19 Position Pin (Male) 25-19 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 24P SIZE 25 STRAIGHT PLUG PIN
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
24 Position Pin (Male) 25-24 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 13 A, 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 29P SIZE 25 STRAIGHT PLUG PIN
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
29 Position Pin (Male) 25-29 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
6In Stock
Min.: 1
Mult.: 1
No
29 Position Pin (Male) 25-29 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 128P PLG SZ 25 PIN CBL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
128 Position Pin (Male) 25-35 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 128P SIZE 25 STRAIGHT PLUG SKT
Datasheet
6In Stock
4Expected 9/17/2026
Min.: 1
Mult.: 1
128 Position Socket (Female) 25-35 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
128 Position Socket (Female) 25-35 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 128P PLG SZ 25 SKT CBL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
128 Position Socket (Female) 25-35 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 61P PLG SZ 25 PIN CBL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1
61 Position Pin (Male) 25-61 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 5P WL MNT SOC SZ 15
Datasheet
7In Stock
Min.: 1
Mult.: 1

5 Position Socket (Female) 15-05 Receptacles 15 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P RCPT SZ 17 PIN WL MNT
Datasheet
6In Stock
Min.: 1
Mult.: 1

6 Position Without Pin Contacts 17-06 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 23 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 11P WL MNT PIN SZ 21
Datasheet
1In Stock
Min.: 1
Mult.: 1

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 11P PIN RECPT
Datasheet
3In Stock
Min.: 1
Mult.: 1

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 43P RCPT SZ 25 PIN WL MNT
Datasheet
3In Stock
Min.: 1
Mult.: 1

43 Position Pin (Male) 25-43 Receptacles 25 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 39P FM SZ 21 PIN PNL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1

39 Position Pin (Male) 21-39 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 4P ST PLUG SZ 13
Datasheet
3In Stock
Min.: 1
Mult.: 1

4 Position Socket (Female) 13-04 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 128P SIZE 25 STRAIGHT PLUG PIN
Datasheet
1In Stock
Min.: 1
Mult.: 1

128 Position Pin (Male) 25-35 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 61P PLG SZ 25 PIN CBL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1

61 Position Pin (Male) 25-61 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 22P FM SZ 13 SKT WL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
22 Position Socket (Female) 13-35 Receptacles 13 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 26P WL MNT RECPT SZ 17
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
26 Position Socket (Female) 17-26 Receptacles 17 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 79P WL mnt recpt sz 21
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
79 Position Pin (Male) 21-35 Receptacles 21 Wall Mount MIL-DTL-38999 III Crimp Wall Mount 5 A Gold Copper Alloy Composite 38999