Push button used in the center of the lockdown bar on some late model Stern & Jersey Jack Pinball machines.
Jersey Jack Pinball sometimes uses this button as well, but they also have been known to use the shorter 1-1/8" shaft in conjunction with a screw at the end of the button shaft.
Shaft is 1-3/8" long.
Stern #515-7791-00.
JJP #30-000124-13.
