This drive shaft fits 3-stage Titan Series 2 dry sump pumps.
Hardened steel shaft measures 1/2" diameter x 7 1/4" long. One end has an oblong slot to drive a Titan Mechanical Tach Drive (sold separately), if desired. The front end is threaded for a 5/16-24 UNF bolt to retain the drive pulley. Three slots accept a Woodruff drive key for each stage.