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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Qty. RoHS ECAD Model Number of Positions
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Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
56In Stock
Min.: 1
Mult.: 1
10 Position Socket (Female) 13-98 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector MS/TRI-START ALUMINUM
Datasheet
25In Stock
Min.: 1
Mult.: 1

18 Position Socket (Female) 15-18 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
39In Stock
8Expected 24/03/2026
Min.: 1
Mult.: 1

19 Position Pin (Male) 15-19 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 19P Size 15 Straight Plug Nickel
Datasheet
49In Stock
Min.: 1
Mult.: 1

19 Position Socket (Female) 15-19 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 37P PLG SZ 15 PIN CBL MNT
Datasheet
49In Stock
Min.: 1
Mult.: 1
37 Position Pin (Male) 15-35 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector St plug 37P; sz 15 15-35
Datasheet
162In Stock
138Expected 11/05/2026
Min.: 1
Mult.: 1
37 Position Socket (Female) 15-35 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 5P PLG SZ 15 SKT CBL MNT
Datasheet
150In Stock
Min.: 1
Mult.: 1

5 Position Socket (Female) 15-05 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 12P PLG SZ 15 PIN CBL MNT
Datasheet
21In Stock
Min.: 1
Mult.: 1

12 Position Pin (Male) 15-97 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
209In Stock
Min.: 1
Mult.: 1

26 Position Pin (Male) 17-26 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
118In Stock
Min.: 1
Mult.: 1

26 Position Socket (Female) 17-26 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 55P PLG SZ 17 PIN CBL MNT
Datasheet
37In Stock
Min.: 1
Mult.: 1

55 Position Pin (Male) 17-35 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 55P PLG PIN
Datasheet
9In Stock
Min.: 1
Mult.: 1

55 Position Pin (Male) 17-35 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector St plug 55P;sz 17 17-.35 W/PIN
Datasheet
66In Stock
136On Order
Min.: 1
Mult.: 1

55 Position Pin (Male) 17-35 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 55P SIZE 17 CABLE MOUNT SOCKET
Datasheet
5In Stock
10On Order
Min.: 1
Mult.: 1

55 Position Socket (Female) 17-35 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 17 PIN CBL MNT
Datasheet
6In Stock
6Expected 24/04/2026
Min.: 1
Mult.: 1

6 Position Pin (Male) 17-06 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 12 PIN JAM NUT RECPT
Datasheet
27In Stock
115On Order
Min.: 1
Mult.: 1

6 Position Pin (Male) 17-06 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 8P PLG SZ 17 PIN CBL MNT
Datasheet
15In Stock
12Expected 20/04/2026
Min.: 1
Mult.: 1
8 Position Pin (Male) 17-08 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 23P SZ 17 PLUG CBL MNT PIN
Datasheet
6In Stock
Min.: 1
Mult.: 1
23 Position Pin (Male) 17-99 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 23P ST PLUG SOC SZ 17
Datasheet
6In Stock
11Expected 11/05/2026
Min.: 1
Mult.: 1
23 Position Socket (Female) 17-99 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 32P PLG SZ 19 SKT CBL MNT
Datasheet
9In Stock
Min.: 1
Mult.: 1
32 Position Socket (Female) 19-32 Plugs 19 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 32P PLG SZ 19 SKT CBL MNT
Datasheet
6In Stock
Min.: 1
Mult.: 1

32 Position Socket (Female) 19-32 Plugs 19 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy 38999 Aluminum Bulk
Amphenol Aerospace Circular MIL Spec Connector 66P PLG SZ 19 PIN CBL MNT
Datasheet
5In Stock
Min.: 1
Mult.: 1
66 Position Pin (Male) 19-35 Plugs 19 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
30In Stock
35Expected 12/05/2026
Min.: 1
Mult.: 1
66 Position Pin (Male) 19-35 Plugs 19 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector 16P PLG SZ 21 PIN CBL MNT
Datasheet
7In Stock
Min.: 1
Mult.: 1

16 Position Pin (Male) 21-16 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy 38999 Aluminum
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
21In Stock
Min.: 1
Mult.: 1

79 Position Pin (Male) 21-35 Plugs 21 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy 38999 Aluminum