Window frame bolt thread

[timeless]

I want to chase the threads on the two bolts that secure the window frame to the door on my IIa. Does anyone know what that thread is, is it Whitworth?

Thanks,
Ed

[jp-]

According to RN, the thread is 7/16" UNF.

Item #30 here: https://www.roversnorth.com/category/91_land_rover_series_ii_iia_iii_doors_hinges

[timeless]

According to RN, the thread is 7/16" UNF.

Item #30 here: https://www.roversnorth.com/category/91_land_rover_series_ii_iia_iii_doors_hinges

Great thanks.