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
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Contact Material
Series
Packaging
Amphenol Aerospace Circular MIL Spec Connector 26P SIZE 17 PIN PANEL MOUNT RECPT
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
26 Position Pin (Male) 17-26 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
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 SIZE 17-26 PIN CRIMP JAM NUT RECEPT
Datasheet
3In Stock
200On Order
Min.: 1
Mult.: 1
No
26 Position Socket (Female) 17-26 Receptacles 17 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 55P JAM NUT RECPT SZ 17
Datasheet
5In Stock
Min.: 1
Mult.: 1
No
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 55P JAM NUT SOC SZ 17
Datasheet
3In Stock
Min.: 1
Mult.: 1
No
55 Position Socket (Female) 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 6P JAM NUT PIN SZ 17
Datasheet
2In 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 11P SIZE 19 JAM NUT RECEPTACLE PIN
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
11 Position Pin (Male) 19-11 Receptacles 19 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 11P RCPT SZ 19 PIN PNL MNT
Datasheet
9In Stock
Min.: 1
Mult.: 1
No
11 Position Pin (Male) 19-11 Receptacles 19 Jam Nut MIL-DTL-38999 III Crimp Panel 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 66P FM SZ 19 PIN PNL MNT
Datasheet
4In Stock
100Expected 10/6/2026
Min.: 1
Mult.: 1
No
66 Position Pin (Male) 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 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 16P RCPT SZ 21 SKT PNL MNT
Datasheet
5In 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 RCPT SZ 21 PIN PNL MNT
Datasheet
2In 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 79P JAM NUT SOC SZ 21
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
79 Position Socket (Female) 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 TRI-START ALUMINUM
Datasheet
3In Stock
24Expected 9/3/2026
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 4P SZ 21 RCPT PNL MNT PIN
Datasheet
5In Stock
Min.: 1
Mult.: 1
No
4 Position Pin (Male) 21-75 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 46 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 4P RCPT SZ 21 SKT PNL MNT
Datasheet
5In Stock
Min.: 1
Mult.: 1
No
4 Position Socket (Female) 21-75 Receptacles 21 Jam Nut MIL-DTL-38999 III Crimp Panel 46 A Gold Copper Alloy 38999 Aluminum Each
Amphenol Aerospace Circular MIL Spec Connector 100P FM SZ 23 PIN PNL MNT
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
100 Position Pin (Male) 23-35 Receptacles 23 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 100P SIZE 23 JAM NUT RECEPTACLE SKT
Datasheet
4In Stock
Min.: 1
Mult.: 1
No
100 Position Socket (Female) 23-35 Receptacles 23 Jam Nut MIL-DTL-38999 III Crimp Panel 5 A Gold Copper Alloy 38999 Aluminum
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 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 128P FM SZ 25 PIN PNL MNT
Datasheet
1In Stock
Min.: 1
Mult.: 1
No
128 Position Pin (Male) 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 PIN SZ 25
Datasheet
9In Stock
Min.: 1
Mult.: 1
No
43 Position Pin (Male) 25-43 Receptacles 25 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 61P SIZE 25 JAM NUT RECEPTACLE PIN
Datasheet
2In Stock
Min.: 1
Mult.: 1
No
61 Position Pin (Male) 25-61 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector KJA SERIES III
Datasheet
10In Stock
95Expected 9/9/2026
Min.: 1
Mult.: 1
61 Position Pin (Male) 25-61 Receptacles 25 Jam Nut MIL-DTL-38999 III Crimp Panel 7.5 A Gold Copper Alloy 38999 Aluminum