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Glenair MIL-DTL-38999 Series

MIL DTL 38999 connectors are high performance cylindrical connectors used in demanding military and aerospace applications.

Glenair produces a broad range of environmental and hermetic MIL DTL 38999 connectors across all four series, including lanyard release types, feed throughs, composite and metal plugs and receptacles, connector savers, EMI/EMP filter options, and Coax/Quadrax-equipped versions.

PDF Download the Glenair MIL-DTL 38999 Catalogue here.

Glenair D38999

MIL-DTL-38999 Series I:

  • 3-point bayonet coupling and scoop proof design
  • Fast mating with ⅓ turn mating
  • High contact density with 3 to 128 contacts
  • Excellent resistance to shock and vibration
  • High level of shock and vibration resistance
  • Available in aluminium, stainless steel and composite shells
  • Ideal applications include general military aerospace, avionics and ground vehicles

MIL-DTL-38999 Series II:

  • Low-profile 3-point bayonet coupling
  • Quick mating with ⅓ turn coupling
  • Reduced size and weight compared to Series I
  • Ideal for Avionics, military electronics and compact equipment

MIL-DTL-38999 Series III:

  • Triple-start threaded coupling with self-locking mechanism
  • Superior EMI shielding
  • Full-mate indicator and positive locking
  • Wide range of shell materials including aluminium, stainless steel and composite
  • High resistance to vibration, shock and harsh environmental conditions/li>
  • High contact density up to 128 contacts
  • Ideal Military aircraft, missiles, naval systems and aerospace electronics

SuperNine MIL-DTL-38999 Series IV:

  • Breech-lock coupling mechanism for very fast and secure locking
  • Fastest mating speed in the range with ¼ turn
  • High shielding performance
  • Supports high density contact arrangements – up to 128
  • For use in high-performance military and aerospace systems requiring rapid mating


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