Related Products

  • D38999
    *Connectors Series III & IV* *Circular Connectors, -65°C to +200°C* Part Number Ordering Information: *D38999[../D38999/index.html]* */XX* *X* ...


Timbercon offers a full range of high-reliability cylindrical connectors specifically designed for use with fiber optics. Designed for harsh environments with lightness and durability in mind, MIL-DTL-38999 cables are available with either composite, aluminum, or stainless steel connectors and components. Updated tolerances in both the connectors and termini provide for consistent precision alignment of optical fibers.


  • Available in 2, 4, 5, 8, 11, 16, 21, 29, 37 channel configurations
  • Low insertion loss
  • Available with single mode and multimode termini
  • Hybrid versions available
  • Tight tolerances
  • Ceramic connector ferrules
  • Ruggedized packaging
  • Precision optical alignment
  • Customizable

MIL-DTL-38999 military fiber optic cables may also be referred to as: D38999, 38999, or tactical fiber.

Triple-start and anti-vibration couplings insure fast and secure mating every time. This connector uses the MIL-T-29504/4 and /5 termini which Timbercon terminates in our factory using custom, automatic polishing fixtures.

Timbercon utilizes high-reliability fiber optic connectors, such as the MIL-DTL-38999, to produce precision alignment of optical fibers. Connectors with polarization keys and keyways are manufactured to exacting tolerances to reduce radial misalignment and insertion loss. Timbercon military specific connectors also incorporate a bottoming surface to ensure reliable shell-to-shell connection. This attribute ensures that the linear dimensional relationship of the contact termini are the same. Contact Timbercon to learn more about MIL-DTL-38999 fiber optics.


  • High quality & reliable - US assembled using domestic and foreign components
  • Certified for harsh environments
  • Consistent and reliable performance from precision engineering


  • Military
  • Shipboard
  • Aerospace
  • Harsh Environment
  • Telecommunications
  • Armored Applications

Home : Fiber Optic Products » Fiber Optic Cables » Military Products » MIL-DTL-38999