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 128P PLG SZ 25 PIN CBL MNT
Datasheet
6In Stock
25Expected 12/7/2026
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 Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 6P ST PLUG PIN SZ 9
Datasheet
21In Stock
Min.: 1
Mult.: 1

6 Position Pin (Male) 09-35 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 9 PIN CBL MNT
Datasheet
137In Stock
Min.: 1
Mult.: 1
6 Position Pin (Male) 09-35 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 9 SKT CBL MNT
Datasheet
47In Stock
Min.: 1
Mult.: 1
6 Position Socket (Female) 09-35 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 3P PLG SZ 9 PIN CBL MNT
Datasheet
42In Stock
Min.: 1
Mult.: 1

3 Position Pin (Male) 09-98 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 3P PLG SZ 9 SKT CBL MNT
Datasheet
47In Stock
439On Order
Min.: 1
Mult.: 1
3 Position Socket (Female) 09-98 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 13P SZ 11 PLUG CBL MNT PIN
Datasheet
34In Stock
Min.: 1
Mult.: 1

13 Position Pin (Male) 11-35 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 13P SZ 11 PLUG CBL MNT SKT
Datasheet
28In Stock
Min.: 1
Mult.: 1
13 Position Socket (Female) 11-35 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999 Bulk
Amphenol Aerospace Circular MIL Spec Connector TRI-START ALUMINUM
Datasheet
163In Stock
Min.: 1
Mult.: 1

13 Position Socket (Female) 11-35 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 11 SKT CBL MNT
Datasheet
37In Stock
Min.: 1
Mult.: 1
6 Position Socket (Female) 11-98 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 11 SKT CBL MNT
Datasheet
112In Stock
17Expected 12/28/2026
Min.: 1
Mult.: 1

6 Position Socket (Female) 11-98 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 22P PLG SZ 13 PIN CBL MNT
Datasheet
39In Stock
385On Order
Min.: 1
Mult.: 1

22 Position Pin (Male) 13-35 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 22P PLG SZ 13 SKT CBL MNT
Datasheet
17In Stock
2Expected 11/10/2026
Min.: 1
Mult.: 1

22 Position Socket (Female) 13-35 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 8P PLG SZ 13 SKT CBL MNT
Datasheet
24In Stock
Min.: 1
Mult.: 1
8 Position Socket (Female) 13-08 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 10P PLG SZ 13 PIN CBL MNT
Datasheet
35In Stock
Min.: 1
Mult.: 1

10 Position Pin (Male) 13-98 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 15P PLG SZ 15 SKT CBL MNT
Datasheet
14In Stock
Min.: 1
Mult.: 1

15 Position Socket (Female) 15-15 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 18P SZ 15 PLUG CBL MNT PIN
Datasheet
35In Stock
Min.: 1
Mult.: 1

18 Position Pin (Male) 15-18 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 37P PLG SZ 15 PIN CBL MNT
Datasheet
10In 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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 37P SZ 15 PLUG CBL MNT SKT
Datasheet
18In Stock
Min.: 1
Mult.: 1

37 Position Socket (Female) 15-35 Plugs 15 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 5P PLG SZ 15 SKT CBL MNT
Datasheet
16In 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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 55P SZ 17 PLUG CBL MNT SKT
Datasheet
29In Stock
25Expected 12/14/2026
Min.: 1
Mult.: 1

55 Position Socket (Female) 17-35 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 17 SKT CBL MNT
Datasheet
17In Stock
25Expected 8/31/2026
Min.: 1
Mult.: 1

6 Position Socket (Female) 17-06 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 23 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 8P PLG SZ 17 PIN CBL MNT
Datasheet
19In Stock
Min.: 1
Mult.: 1
8 Position Pin (Male) 17-08 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 8P ST PLUG SOC SZ 17
Datasheet
9In Stock
13Expected 11/12/2026
Min.: 1
Mult.: 1
8 Position Socket (Female) 17-08 Plugs 17 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 66P SIZE 19 STRAIGHT PLUG PIN
Datasheet
8In 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 Stainless 38999