MIL-DTL-38999 (formerly MIL-C-38999) connectors are designed and approved to meet the most stringent requirements of the Military and Aerospace industry. Amphenol manufactures three different series of connectors fully compliant with the MIL-DTL-38999 standard and many other tailored and derivative products.

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This range of circular connectors offered by Amphenol includes various styles of coupling mechanism such as; Threaded, Bayonet, Push-Pull, Rack & Panel and Lanyard Release.  A wide range of insert arrangements are available with Crimp Removable or Hermetically Sealed contacts to suit Signal, Power, Coax, Twinax, Quadrax and even Fibre Optic Termini.   Traditionally this product series has been offered to the market in plating finishes such as Cadmium Olive Drab, Zinc Cobalt and Electroless Nickel  however recent research and development now means that these connectors can be supplied with the latest RoHS compliant Military approved Black Zinc Nickel plating finish.

Supplementary to the connector styles and planforms specified in MIL-DTL-38999 Amphenol Ltd also designs and manufactures many tailored product solutions to suit the highly demanding environments in which they are typically used.  Customisation of connectors may include the addition of PCB Stand-offs, Grounding, First mate-last break earth contacts, EMI filtering, and Hermetic sealing.  The advanced machining facilities at the Whitstable manufacturing site also enable Amphenol Ltd’s customers to choose from a variety of specialist metals such as Stainless Steel (for corrosion & wear resistance), Aluminium Bronze (for corrosion resistance in saline environments), & Titanium (for weight saving especially in aerospace applications).

A wide selection of accessories including caps, backshells and tooling are offered to suit standard Mil-DTL-38999 connectors.

View the full range D38999 Catalogue

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TV-CTV Tri-Start MIL-DTL-38999 Series III connectors have high-density contact arrangements in a miniature circular shell. Originally designed for the high-performance requirements of military and commercial aircraft, these circular connectors are perfect for applications requiring extremely reliable interconnections. Amphenol TV-CTV connectors are quick-mating and environmentally-sealed and represent the highest performing connectors from the 38999 range. Available in aluminium alloy, composite, stainless steel, marine bronze
TV, CTV, 38999 Series III TV, CTV, D38999 Series 3 connector - Operates at extreme temperatures
- 100% Scoop proof contact protection
- High coupling durability with outstanding EMI shielding protection
- Moisture and corrosion resistance
- Different plating options including Black Zinc Nickel (RoHS)
- Self locking connector systems provide the best performance for threaded connectors in high vibration applications
- Typical Applications; battlefield, ground vehicles, aircraft, communication systems.


SJT MIL-DTL-38999 series of miniature circular connectors offer high-density contact arrangements in a bayonet coupling style. They are environmentally-sealed and have a wide operating temperature range. These lightweight and scoop proof connectors meet the requirements of VG96912, are qualified to JAN1003 and are NATO-standard. They are commonly called 38999 series I.5.
SJT, 38999 Series I.5 MIL DTL 38999 Series 1.5 SJT connector - Lightweight
- 100% Scoop proof contact protection
- Environmentally sealed
- Different plating options available, including Black Zinc Nickel (RoHS)
- Typical Applications; Battlefield, ground vehicles, aircrafts, communication systems,  Advanced industrial applications.


LJT MIL-DTL-38999 Series I miniature connectors offer high-density contact arrangements and are suitable for extremely high-reliability connections including use in military and commercial aviation. They are environmentally sealed, have a wide operating temperature range and meet the requirements of HE308

LJT, 38999

Series I           

Mil DTL 38999 Series 1 LJT connector - Bayonet coupling
- 100% scoop proof
- Rugged
- Typical Applications; Military avionics, military vehicles, battlefield communication


JT MIL-DTL-38999 Series II miniature connectors offer high-density contact arrangements in a small size. They were designed for high-performance requirements, including military and commercial aviation applications. These connectors are environmentally-sealed and have a wide operating temperature range.
JT, 38999 Series II Mil DTL 38999 Series 2 JT connnector - Bayonet coupling
- Low profile shell
- Lightweight
- Typical Applications; military aeronautics, applications requiring very low profile connector form