Active Electronics

MIL-DTL-38999 Series II - JT

Amphenol® MIL-DTL-38999 Series II Connectors were developed to meet the needs of the aerospace industry and provided the impetus for the development of the MIL-C-38999 specifications, which later was superseded by MIL-DTL-38999. Amphenol’s MIL-DTL-38999 Series II and commercial JT series connectors meet or exceed the Mil-Spec requirements and are available in aluminum or stainless steel as well as several different finish options. Amphenol is also qualified to the MIL-DTL-27599 specification for Series II connectors.


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  • Lightweight, Space Saving Design

  • Quick Positive Coupling – 3 point bayonet lock system

  • Mismating Eliminated – with 5 key/keyway design

  • Error Proof Alternate Positioning – insured by different key/ keyway locations

  • EMI Shielding – grounding fingers optional

  • Nine Shell Sizes and a Variety of Shell Styles

  • Contact Options – size 8, 10, 12, 16, 20, 22M and 22D Crimp, Solder, PCB, Wire wrap, Coax, Twinax, Triax, Thermocouple, Fiber Optic and Filter

  • Fixed Solder Contacts – available in solder versions as both Commercial and Military qualified to MIL-DTL-27599

  • Inventory Support Commonality – uses standard MIL-DTL-38999 contacts, insert arrangements and application tools.

38999 Catalogue