Vacuum tube insert assembly with feed-through pin plug and mating socket

A method for constructing a vacuum tube insert assembly, comprising:

• constructing a flared insert piece and a stem from glass, the flared insert piece having an annular flange surrounding a plug concavity, and the stem being integrally formed with the annular flange and extending axially therefrom;
• axially inserting a plurality of feed-through pins through the stem at a fixed position relative to each other, such that the feed-through pins are collectively arranged as a plug within the plug concavity with the feed-through pins comprising a continuous material extending a first distance from an inner surface of the stem into an internal volume of the vacuum tube insert assembly and extending to terminate at a second distance from an outer surface of the stem inside the plug concavity;
• and
• sealing the stem to the feed-through pins, thereby forming the plug, wherein the plug or a mating socket includes an engagement feature permitting the plug to receive the socket in a specified orientation.

A vacuum tube insert assembly, comprising:

• a glass enclosure, including an annular flange integrally formed with an axially-extending stem, the stem defining a plug concavity, wherein the annular flange surrounds a perimeter edge of the plug concavity;
• a plug including a plurality of feed-through pins passing axially through and sealed to the glass enclosure, the feed-through pins comprising a continuous material extending a first distance from an inner surface of the stem into an internal volume of the glass enclosure and extending a second distance from an outer surface of the stem to terminate inside of the plug concavity;
• and
• a socket configured to connect to the plug within the plug concavity, wherein a plurality of receptacles of the socket is configured to removably couple to the feed-through pins of the plug, wherein the socket or the plug separately or together include an engagement feature configured to permit the plug to receive the socket in a specified orientation of the socket.