Series 6500 – This series of hermetic connector meets or exceeds the requirements of MIL-DTL-83723 Series III, threaded style coupling and M83723/88, M83723/89 and M83723/90. This specification is an upgrade to MIL-DTL-26500 and has the same mounting dimensions.
Series 6600 – This series of hermetic connector meets or exceeds the requirements of MIL-DTL-83723 Series III, bayonet style coupling and M83723/79, M83723/80, M83723/81, M83723/93 and M83723/94.