Active Electronics

JT - JD38999 Series II

MIL-DTL-38999 Series II qualified

Thanks to its high level of expertise on MIL-DTL-38999 SERIES I, II & III & EN3645 connectors, Amphenol Socapex is the industry leader in D38999 circular connectors.  Offering QPL MIL-DTL-38999 and EN3645 qualified connectors with a large range of features including 38999 Rack & Panel, 38999 Miniature, 38999 Reduced Flange, 38999 Stand-off, 38999 Integrated Backshell & 38999 Power, Amphenol Socapex can answer all your needs through its line of reliable & qualitative products. Our 38999 connectors are available in Aluminum, Stainless Steel, Marine Bronze or Composite material with ROHS-compliant plating available in Black-Zinc Nickel and more. While the qualified Mil-Spec versions offer you a number of features, our customizable options are endless. We provide also free D38999 Series III CAD files.


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Key features

  • Large variety of contact arrangements and shell types, with maximum weight / space savings

  • 100% contact protection

  • Metallic and composite version


  • Battlefield Communication

  • Grounded vehicles

  • Military avionics

Technical information

Shell material:

  • Aluminium alloy

  • Carbon steel (for hermetic versions)


  • Olive drab cadmium plating

  • Electroless nickel plating

  • Black Zinc Nickel plating

Shell sizes : 

  • 9 sizes from 08 to 24


  • More than 50 arrangements of contacts

  • Size 12, 16, 20, 22D contacts

  • Crimp, PCB, signal and power contacts

Contact protection:

  • Pin contacts are not scoop-proof protected

  • Improved interfacial seal ensures sealing around each contact

EMI/RFI protection:

  • Optional grounding fingers on the plug shell Very low profile and light weight

Download the Product Brochure


Since 1947, Amphenol Socapex has prescribed, designed and manufactured reliable and innovative interconnection solutions for harsh environments, specializing in standard and customized electrical and fiber optic connectors, contacts, accessories and cabling solutions.

Located in the Mont Blanc region of France and Pune in India, Amphenol Socapex has a presence in over 100 countries around the world.

Amphenol Socapex is part of Amphenol Corporation.