Barneybc12d
Well Known Member
I am working on the aileron hinge bracket. Plans call for a #12 countersink. I have the tool, but no #12 flathead to gauge the depth. Am I missing a part or is this something they expect a first time builder to have on hand? Will a hardware store have one with the same dimensions or do I need to order a AN fastener to complete this step? I have a #10 screw but am afraid to countersink a little deeper than the 10 hoping it will be right for the 12.