38999 Series

LJT - HE308 - 38999 Series I

MIL-DTL-38999 Series I & HE308 qualified
Part Number :
38999 Series

LJT - HE308 - 38999 Series I

MIL-DTL-38999 Series I & HE308 qualified

Key features

  • 100% scoop proof design
  • Bayonet coupling connectors with a large variety of contact arrangements and shell types
  • More than 60 contacts arrangements, from 1 to 128 contacts
  • Ruggedized product with an high resistance to shocks & vibrations
  • Several materials et platings available, with RoHS & REACH compliant versions


  • Military Vehicles 
  • Battefield communication C5ISR
  • Military Avionics
Technical information

Product benefits :

  • Several receptacles style : Square flange, Jam nut, In-line... 
  • Quick coupling, fully mated in a 1/4 turn of the coupling nut
  • Many versions available : Integrated backshell, Stand-off (double flange)...

Materials & Platings :

  • Aluminium : Olive drab Cadnium, Nickel , Black Zinc nickel 
  • Marine bronze (unplated)

Contacts types & terminations :

  • More than 60 contacts arrangements 
  • Contacts size 23 to 4/0
  • Signal, Power, High-speed versions (Coax, Twinax, Quadrax, Octomax...), and optical termini
  • Crimp & PC-Tails (gold & tinned versions)

Environmental Characteristics :

  • 500 mating cycles
  • -65degC to 175 or 200degC depending on material & plating
  • From 48 to 500 hours depending on material & plating
  • IPX7 when mated and fully cabled

Electrical characteristics :

  • Insulation resistance @Ambient : 5.103 mO
  • Contact rating from 3 to 230, 40 or 17 depending on material and plating
3 documents

Catalog MIL-DTL-38999 & Derivates

Last update : 05/03/2024
Product change notifications (PCN)
3 notifications
#PCN 133633
TV - Reduced flange receptacle
TV - Integrated Backshell
TV - Stand-off receptacle
LJT - HE308 - 38999 Series I
RNJ - Reduced Flange
RNJLP - Rack & Panel Low profile
#PCN 131047
LJT - HE308 - 38999 Series I
TV-CTV - D38999 Series III

Amphenol Socapex stop making 38999 Series I and III Connector equipped with wrapped contacts. We advise you to order PC tails and/or crimp versions instead.

#PCN 130559
LJT - HE308 - 38999 Series I
JT - 38999 Series II
TV-CTV - D38999 Series III

Replacement of white ink marking with laser marking on some inserts’ interfacial seals for MIL-DTL-38999 Series I, II, III type and derivative connectors.

Request form to receive the detailed « Product Change Notification »

J'accepte les conditions générales
38999 reduced flange jam nut receptacle
I/O Connectors
38999 Series

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LJT - HE308 - 38999 Series I description

Amphenol Socapex LJT product range, is a highly reliable and durable connector designed to meet the rigorous demands of the aerospace and military industries. It is a bayonet coupling connector that offers a large variety of contact arrangements and shell types, with maximum weight/space savings, making it ideal for use in applications where space is limited. The LJT product range is MIL-DTL-38999 series I and HE308 qualified, ensuring it meets the highest industry standards for performance and reliability. Additionally, it provides 100% contact protection, ensuring that the contacts are not damaged during use, which is critical in harsh environments such as battlefield communication and military avionics. The LJT product range is available in both metallic and composite versions, providing options for different environmental conditions and weight requirements. This versatility makes it suitable for a wide range of applications, including grounded vehicles, military avionics, and battlefield communication. Amphenol Socapex's LJT product range is an excellent choice for applications that require a high level of reliability, durability, and performance. Its MIL-DTL-38999 series I and HE308 qualifications, large variety of contact arrangements and shell types, and 100% contact protection make it a top choice for the aerospace and military industries.