Chapter 2 TPD1317e Key Propeller shaft Half dog set screws Gearbox output shaft Butt propeller shaft against gearbox output shaft Figure 4 - Hurth gearbox couplings Page 10 Dimensions in inches A B C D E F G H I J K 1.00 0.25 1.12 3/8 UNC 5.00 2.50 3.16 0.38 2.16 0.88 4.25 1.12 0.25 1.24 1.25 0.31 1.39 1.38 0.31 1.52 1.50 0.38 1.67 1.75 0.44 1.95 2.00 0.50 2.23 2.25 0.56 2.50