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M30 - Coarse 3.5mm, Fine 2.0mm?Metric Thread Pitch and Tapping SizesSizePitch (mm)Tapping Diameter (mm)Clearance Holes (mm)
CoarseFineCoarseFineCloseMediumCoarse
M1.60.35
1.25
1.71.82.0
M20.4
1.6
2.22.42.6
M2.50.45
2.05
2.72.93.1
M30.5
2.5
3.23.43.6
M40.7
3.3
4.34.54.8
M50.8
4.2
5.35.55.8
M61.0
5.0
6.46.67.0
M81.251.06.87.08.49.010.0M101.51.258.58.710.511.012.0M121.751.2510.210.8131415M162.01.514.014.517.018.019.0M202.51.517.518.521.022.024.0M243.02.021.022.025.026.028.0M303.52.026.528.031.033.035.0M364.03.032.033.037.039.042.0
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Q: Pitch of the bolt of 30 mm metric thread dia meter is?
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