You need a type 2 bolt, straight handle, black oil quench finish with gas port. These were used from 1908 to 1918. Above serial #802,00 are double heat treated and well be marked J6 or similar on top of bolt root.
Now that evil bay has changed back to the old gun listing rules there are a lot of '03 bolts listed. Shouldn't be to hard to find a straight handle bolt. I found a very nice one for my RIA for $35 or so.