1. The pitch diameter is indicated as Dp in the figure shown above. 2. There are several methods that are used to measure the pitch diameter . 3. Truncation is achieved by using a slightly larger pitch diameter is not affected. 4. It is understood to be at the standard pitch diameter unless otherwise specified. 5. Hobbing machines are characterised by the largest module or pitch diameter it can generate. 6. Thread class refers to the acceptable range of pitch diameter for any given thread. 7. It is understood to be measured at the standard pitch diameter unless otherwise specified. 8. The endmill should be the pitch diameter . 9. The term module is understood to mean the pitch diameter in millimeters divided by the number of teeth. 10. The same involute gear may be used under conditions that change its operating pitch diameter and pressure angle.
