NPT” pipe tap. Fill the touch hole with grease, screw in
the pressure sensor, and attach the sensor leads to
EasyMotor.
+
+ If you aren't up for machining closures yourself,
+ link:http://lokiresearch.com[Loki Research] sells
+ 54mm and 75mm "experimental bulkheads" with threaded
+ sensor ports that can be used with snap ring cases.