Larger size Fat Boy sockets afford an accurate restoration of early electric lamps. Old fashioned Fat Boy sockets have a bigger overall appearance but accept standard base light bulbs. Fat Boy sockets have a solid brass shell and brass cap with set screw. Socket caps are tapped 1/8 IP to fit standard lamp pipe.
Before making any changes to electrical fixtures and lamps:
Disconnect plug/wire from the electrical source.
Turning lamp off will not protect you from electric shock.
If you are unsure how to safely proceed contact a licensed electrician.