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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Amphenol Aerospace Circular MIL Spec Connector 3P PLG SZ 9 SKT CBL MNT
Datasheet
8In Stock
25On Order
Min.: 1
Mult.: 1
3 Position Socket (Female) 09-98 Plugs 9 Straight MIL-DTL-38999 III Crimp Cable Gold Copper Alloy Stainless 38999 Bulk
Amphenol Aerospace Circular MIL Spec Connector 18P PLG SZ 15 SKT CBL MNT
Datasheet
3In 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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 19P PLG SZ 15 PIN CBL MNT
Datasheet
5In Stock
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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 19P SZ 15 PLUG CBL MNT SKT
Datasheet
1In Stock
25Expected 11/12/2026
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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 26P SIZE 17 STRAIGHT PLUG PIN
Datasheet
3In Stock
26Expected 12/18/2026
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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 26P PLG SZ 17 SKT CBL MNT
Datasheet
5In Stock
25Expected 1/11/2027
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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 11P SZ 19 PLUG CBL MNT SKT
Datasheet
3In Stock
25Expected 10/5/2026
Min.: 1
Mult.: 1

11 Position Socket (Female) 19-11 Plugs 19 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 32P PLG SZ 19 SKT CBL MNT
Datasheet
4In 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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 29P PLG SZ 25 SKT CBL MNT
Datasheet
24In Stock
Min.: 1
Mult.: 1

29 Position Socket (Female) 25-29 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 128P SZ 25 PLUG CBL MNT SKT
Datasheet
1In Stock
Min.: 1
Mult.: 1

128 Position Socket (Female) 25-35 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 56P PLG SZ 25 PIN CBL MNT
Datasheet
2In Stock
25Expected 11/13/2026
Min.: 1
Mult.: 1
56 Position Pin (Male) 25-04 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 61P SIZE 25 STRAIGHT PLUG PIN
Datasheet
25In 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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 61P SIZE 25 STRAIGHT PLUG PIN
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 Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 61P SIZE 25 STRAIGHT PLUG SKT
Datasheet
1In Stock
25Expected 9/8/2026
Min.: 1
Mult.: 1
61 Position Socket (Female) 25-61 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999
Amphenol Aerospace Circular MIL Spec Connector 6P PLG SZ 9 PIN CBL MNT
Datasheet
2In 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 Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 6P ST PLUG PIN SZ 11
Datasheet
1In Stock
Min.: 1
Mult.: 1

6 Position Pin (Male) 11-98 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 7P SIZE 11 SOCKET CABLE MOUNT PLUG
Datasheet
4In Stock
Min.: 1
Mult.: 1

7 Position Socket (Female) 11-99 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 22P SZ 13 PLUG CBL MNT SKT
Datasheet
4In Stock
Min.: 1
Mult.: 1

22 Position Socket (Female) 13-35 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 4P ST PLUG PIN SZ 13
Datasheet
6In Stock
Min.: 1
Mult.: 1
4 Position Pin (Male) 13-04 Plugs 13 Straight MIL-DTL-38999 III Crimp Cable 13 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 26P SIZE 17 STRAIGHT PLUG PIN
Datasheet
2In 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 Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 100P PLG SZ 23 PIN CBL MNT
Datasheet
3In Stock
24Expected 11/3/2026
Min.: 1
Mult.: 1
100 Position Pin (Male) 23-35 Plugs 23 Straight MIL-DTL-38999 III Crimp Cable 5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 55P SIZE 23 STRAIGHT PLUG PIN
Datasheet
2In Stock
Min.: 1
Mult.: 1
55 Position Pin (Male) 23-55 Plugs 23 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 128P PLG SZ 25 PIN CBL MNT
Datasheet
4In 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 Composite 38999
Amphenol Aerospace Circular MIL Spec Connector 43P ST PLUG SOC SZ 25
Datasheet
1In Stock
Min.: 1
Mult.: 1

43 Position Socket (Female) 25-43 Plugs 25 Straight MIL-DTL-38999 III Crimp Cable 7.5 A, 13 A Gold Copper Alloy Composite 38999 Bulk
Amphenol Aerospace Circular MIL Spec Connector 5P SIZE 11 STRAIGHT PLUG SOCKET
Datasheet
2In Stock
Min.: 1
Mult.: 1
5 Position Socket (Female) 11-05 Plugs 11 Straight MIL-DTL-38999 III Crimp Cable 7.5 A Gold Copper Alloy Stainless 38999