So my trucks (tools and radios too) with fine and coarse screws, bolts, nuts (thread pitch, 1.25, 1.50, 1.75, 2.00 and so forth) and my taps and dies, metric, in fine and coarse of varying degrees are all a freakish mistake? Kurt ----- Original Message ----- From: "JV" <jv at kt4u.org> : Sorry, you are wrong. SAE are fine and course.