| 102 / | HD | AMMUNITION AND EXPLOSIVES | 
| 200 | DF | IGNITING DEVICES AND SYSTEMS {15} | 
| 221 | DF | .~ Arming devices {2} | 
| 222 | DF | .~.~ Blocking or interrupting type {7} | 
| 231 | DF | .~.~.~ Centrifugal and setback operated {3} | 
| 232 | DF | .~.~.~.~ With or including a timing device {1} | 
| 233 |  | .~.~.~.~.~ With setback latch |