2007-03-26 20:03:25 · 5 answers · asked by Jaco d 1 in Science & Mathematics ➔ Engineering
M20 is 20 mm in diameter, measured to the point specified in the standard. There should be another number which is the pitch - the distance between successive threads at the same point. On a bolt this size it should be 2 or 2.5 I believe which is 2 or 2.5 mm.
2007-03-26 20:27:05 · answer #1 · answered by Mike1942f 7 · 0⤊ 0⤋
When adapting a technical drawing to metric from SAE standard inches ,,
This is done because working with metric is simpler. You are calculating in decimals instead of fractions.
If you were changing the specs on a bolt from UNC standard,17 turnings.
Converting to an M12 threading would make it weaker,
Whereas
A M20 threading is stronger, with 20 threads.
2007-03-27 03:35:58 · answer #2 · answered by Anonymous · 0⤊ 0⤋
m20 is always refereed to bolts in machine Assembly drawings
2007-03-27 03:09:29 · answer #3 · answered by tamer a 1 · 0⤊ 0⤋
depends on the country's standard, and M20 is a bit vague either way, soz
2007-03-27 03:06:40 · answer #4 · answered by DeepBlue 4 · 0⤊ 0⤋
bolt size
go to
McMaster Carr website. May give you the size
2007-03-27 03:16:31 · answer #5 · answered by John 5 · 0⤊ 0⤋