Never assume...
I did and it bit me
I bought bolts with a long shoulder so there would be better bearing surface in the inserts that i had made up for the bolt holes that are 3/4 with 5/8 bolts in them. I had to have the bolts shortened to the lenght of the blind holes. The holes in the one side are not threaded to the bottom of the holes like the other side.
So i got a good bottoming tap on order from the machine shop...
While waiting i tried a new run of the mill made in USA HSS bottoming tap. It was good for about 10 holes then began to get dull,and eventually chipped of a couple edges on the tap.
The machine shop told me that it was a very hardened piece when they added the holes for grease zerks
I will run the good tap into all the holes after to give them a final shape.
I did and it bit me
I bought bolts with a long shoulder so there would be better bearing surface in the inserts that i had made up for the bolt holes that are 3/4 with 5/8 bolts in them. I had to have the bolts shortened to the lenght of the blind holes. The holes in the one side are not threaded to the bottom of the holes like the other side.
So i got a good bottoming tap on order from the machine shop...
While waiting i tried a new run of the mill made in USA HSS bottoming tap. It was good for about 10 holes then began to get dull,and eventually chipped of a couple edges on the tap.
The machine shop told me that it was a very hardened piece when they added the holes for grease zerks
I will run the good tap into all the holes after to give them a final shape.