Active Electronics

RNJ Reduced Flange

Where small dimensions & lower weight are critical in blind-mate applications

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.


Call our UK Sales team on 01494 441414

or please email us


Key features

• Derived from RNJ – HE308 Rack & Panel connector
• For Jam Nut Plugs & Receptacles, with maximum weight / space savings
• Same realignement capabilities than RNJ


  • Battlefield Communication

  • Grounded vehicles

  • Military avionics

Technical information

Shell material:

  • Aluminium alloy


  • Olive drab cadmium plating

  • Electroless nickel plating

  • Black Zinc Nickel plating

Shell sizes:

  • 8 sizes from 11 to 25


  • More than 60 arrangements of contacts including high density and power versions

  • Size 0000, 00, 4, 8 dedicated power contacts and sizes 8, 12, 16, 20, 22D & 23 contacts for power or data transmission

  • Crimp or PC Tail terminations

Contact protection:

  • 100 % scoop-proof shell

  • Improved interfacial seal ensures sealing around each contact and prevents electrolytic erosion

For environmental applications :

  • Temperature range: -65°C +175°C

  • Insulation resistance > 5000 Mohms at ambient temperature under 500 Vcc

EMI / RFI protection:

  • Shielding ring on the plug shell

  • Shells are grounded before contact mating


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.