Bombs used were:
interwar Mark series for the US planes, 100, 300 600lbs and 1100lbs (similar to the ones in the pack 0_WW1Bombs_American)
For the Dutch: vliegtuigbommen 50kg No1, 50kg No2, 100kg No1 100kg No2 200kg No1 200kg No2 300kg No1 300kg No2 (most probably the Marine series of these bombs, as usual in the Eastern Indies), and possibly DT-2 50, 100kg and 200kg (all found in the pack _Arms_Dutch)
For the Chinese: French DT-2 50kg, 100kg and 200kg (found in the pack _Arms_France_Interwar) , and Italian 100 and 250kg bombs (found in the pack _Arms_Italy) and a local designed and produced 250kg bomb of quite advanced design, which is still rather mysterious.
For the Argentinian: Bofors bombs 50kg M31 and 100kg M30 (found in the pack _Arms_Finland)
For the Thai: bomb load reported as being 10x 250lbs bombs (need to be cautious with this info)
Bombsight were the Estoppey (a vector bombsight) and the Goetz type R (quite similar to the new bombsight of the Pe8 in 413). Although the USAAC used the B-10 to evaluate precision bombing tactics with the new Norden bombsight, these were not used on operational aircraft.
Beyond the bombs in bomb bay, one bomb (in practice up to 300kg in addition to the bomb bay load) could be loaded on an external pylon under the starboard wing only.
Initially on the US aircraft, the internal bomb bay of the US aircraft could carry two 1100lbs bombs or five 300lbs bombs. There were provisions for an external shackle under the right wing for a single 2000 pound bomb (instead of the bombs in bomb bay).
The Bombload was up to 1000kg for the Dutch and Chinese models (exactly 2260 lbs. - 1030kg)