These 7-pin miniature tube sockets are designed for chassis-mounting 7-pin miniature vacuum tubes (such as the 6AU6, 6AT6, 6X4, and 6BA6) commonly found in post-war radio receivers, audio equipment, and test instruments. Featuring a standard 1-1/2 inch distance between mounting hole centers, these sockets secure directly to the metal chassis using a metal saddle clip or wafer assembly. Available in brown phenolic/molded construction, black molded composite, and phenolic wafer types with solder lugs for reliable under-chassis wiring. Available NOS and new stock.