Rick_A Well Known Member Jul 21, 2010 #2 It's .2570 . There are many references out on the web. Here the first one I came across: http://www.carbidedepot.com/formulas-drillsize.htm If you have the Avery catalog, there is a drill size reference chart in the back. I kept that page handy while I was building.
It's .2570 . There are many references out on the web. Here the first one I came across: http://www.carbidedepot.com/formulas-drillsize.htm If you have the Avery catalog, there is a drill size reference chart in the back. I kept that page handy while I was building.
GAHco Well Known Member Jul 21, 2010 #5 Here is the hole thing, (pun intended) To see all the drills from itty bitty to 1/2" See this PDF link listing them, Jobber, Extension, HSS and Cobalt. http://www.gen-aircraft-hardware.com/images/pdf/drills.pdf Hope this helps, feel free to print it for you personal use.
Here is the hole thing, (pun intended) To see all the drills from itty bitty to 1/2" See this PDF link listing them, Jobber, Extension, HSS and Cobalt. http://www.gen-aircraft-hardware.com/images/pdf/drills.pdf Hope this helps, feel free to print it for you personal use.
