drill size and pitch dia
2006-12-28 05:23:00 · 4 answers · asked by uthaya k 1 in Science & Mathematics ➔ Engineering
An old trick I used that gets you close for machine threads is
diameter - (1/pitch) = drill diameter
You are still better off using a chart....
2006-12-28 07:10:02 · answer #1 · answered by MarkG 7 · 0⤊ 0⤋
This is not a calculation, but this information is available in Machinery's Handbook. For example if you are trying to drill and tap a 3/4-10 thread it will tell you the drill bit to start with. It will also give you thread dimensions such as pitch angle, major and minor diameters, etc.
2006-12-28 05:36:16 · answer #2 · answered by Thomas B 1 · 0⤊ 0⤋
I've never done the calculations since the dimension you're looking for is usually given in a table or spec sheet.
2006-12-28 05:26:43 · answer #3 · answered by cranknbank9 4 · 0⤊ 0⤋
Try this website http://www.engineersedge.com
2006-12-28 06:27:14 · answer #4 · answered by Anonymous · 0⤊ 0⤋