Q:
How to specify metric thread with major diameter 45mm, 2mm pitch, grade 7, tolerance grade h (internal thread), right hand double start threaded profile?
A) M 45*2-7-H-RH-DOUBLE
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B) M 45*2-7-h-RH-DOUBLE
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C) M 45*2-7-H-LH-DOUBLE
| D) M 45*7-2-H-RH-DOUBLE
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Explanation