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Feedthroughs & Viewports > Electrical Feedthroughs > Coaxial Feedthroughs > Cabling Instructions for Feedthroughs

Mil-Spec (MS) Feedthroughs Cabling Instructions & Specifications


  • 4 to 35 pins
  • Features an industry-standard threaded connector, which meets MIL-C-5015
  • Used for medium current applications up to 700V
  • Available as single- and double-ended feedthroughs
  • Single-Ended includes air-side cable connector
  • Double-Ended includes both atm and vacuum side connectors

Specifications Table

Conductor MaterialAlumel®
Insulator MaterialAlumina
ConnectionScrew Thread
Vacuum ApplicationHV or UHV
Temperature Range
(for metal seals)
Weld adapter, CF: 77K to +450°C
Temperature Range
(for elastomer seals)
KF, O-Ring, NPT: -40 °C to +150°C
Temperature Max. Ramp Rate25°C / Minute
Max. Current10A (Per Pin)
100A (All Pins*)
Max. Voltage700V
Number of Pins4-35
Air-Side Connector 0° to +35°C
Vac-Side Connector
(PEEK Insulation)
77K to +450°C

* For feedthrough in the group with the most pins and all pins loaded.

MS Connectors, Low-Current (Threaded) Cabling Instructions