MIL-DTL-38999 fiber-optic connectors for use in harsh environments offered by FC Lane Electronics

Rugged connectors feature Fibreco field-proven expanded-beam technology and share the same housing design as conventional copper D38999 connectors.
Jan. 28, 2026
2 min read
The FC Lane Electronics CINCH Fibreco generic D38999 MIL-DTL-38999 series III fiber-optic connectors from Cinch Connectivity Solutions in Lombard, Ill., are for performance-critical applications like defense, aerospace and industrial equipment.

Summary points:

  • FC Lane Electronics now offers Cinch Fibreco D38999 Series III connectors designed for demanding defense, aerospace, and industrial applications.
  • Features proven Fibreco expanded-beam design in standard D38999 housings for superior durability in harsh environments.
  • Available in multiple shell materials, mounting options, and back-shell styles to support vehicle, aircraft, and naval systems.

HORSHAM, England – Electronics distributor FC Lane Electronics Ltd. in Horsham, England, is offering the CINCH Fibreco generic D38999 MIL-DTL-38999 series III fiber-optic connectors from Cinch Connectivity Solutions in Lombard, Ill., for performance-critical applications like defense, aerospace and industrial equipment.

These rugged connectors feature Fibreco field-proven expanded-beam technology and share the same housing design as conventional copper D38999 connectors. D38999 connectors are designed to MIL-DTL-38999 III and can withstand extreme temperatures, vibration, and harsh environments.

The Fibreco D38999 series III fiber-optic connectors feature the generic MIL-DTL-38999 series III tri-start thread and one-turn self-locking anti-vibration coupling mechanism for use in vehicle, aircraft, and naval environments.

Choice of shell materials

Plug and receptacle connectors are available with straight or 90-degree back-shell options and a choice of shell materials including aluminum alloy (zinc cobalt, olive drab), aluminum alloy (electroless nickel plated), nickel aluminum bronze (shot blast, non-reflective) and stainless steel (passivated). receptacle connectors are available with jam-nut or square-flange mounting and strain relief for zip-cords or tactical cable.

The connectors are terminated using an epoxy-polish ferrule termination process with standard fiber optic termination tools and equipment. The terminated ferrules insert into the expanded-beam housing and fixed in place via a spring and cover-plate.

For more information contact FC Lane Electronics online at www.fclane.com, or Cinch Connectivity Solutions at https://www.cinch.com/media/datasheets/products/optical-technology/connectors/ds-ccs-fibr-fibreco-d38999-series.pdf.

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John Keller

Editor-in-Chief

John Keller is the Editor-in-Chief, Military & Aerospace Electronics Magazine--provides extensive coverage and analysis of enabling electronics and optoelectronic technologies in military, space and commercial aviation applications. John has been a member of the Military & Aerospace Electronics staff since 1989 and chief editor since 1995.