To convert from millimeters (mm) to inches:
| Factor | Value |
|---|---|
| 1 inch to mm | 25.4 mm |
| 1 mm to inch | 0.03937 inches |
A 31mm drill bit is commonly used in:
| Size (Mm) | Size (Inches) | Use | Page |
|---|---|---|---|
| 29 mm | 1.1417322835 inches | General purpose drilling | View |
| 30 mm | 1.1811023622 inches | General purpose drilling | View |
| 31 mm | 1.2204724409 inches | General purpose drilling | View |
| 32 mm | 1.2598425197 inches | General purpose drilling | View |
| 33 mm | 1.2992125984 inches | General purpose drilling | View |
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