Fibre Systems provides M29504 termini, tooling, and assemblies engineered for high optical and mechanical performance in harsh environments. These cost-effective, precision termini fit MIL-DTL-38999 Series 3 size 16 cavities and meet MIL-PRF-29504 standards for both singlemode and multimode applications. Featuring tight-tolerance zirconia ceramic ferrules for low insertion loss and back reflection, the pre-domed ferrules support PC and ultra-PC polishing. Socket termini include zirconia split alignment sleeves for reliable, repeatable connections across many matings.