Number Drill Sizes - LittleMachineShop.com
Drill: Inch: mm: 80: 0.0135: 0.34: 79: 0.0145: 0.37: 78: 0.016: 0.41: 77: 0.018: 0.46: 76: 0.020: 0.51: 75: 0.021: 0.53: 74: 0.0225: 0.57: 73: 0.024: 0.61: 72: 0.025: 0.64: 71: 0.026: 0.66: 70: 0.028: 0.71: 69: 0.029: 0.74: 68: 0.031: 0.79: 67: 0.032: 0.81: 66: 0.033: 0.84: 65: 0.035: 0.89: 64: 0.036: 0.91: 63: 0.037: 0.94: 62: 0.038: 0.97: 61: 0.039: 0.99: 60: 0.040: 1.02: 59: 0.041: 1.04: 58: 0.042: 1.07: 57: 0.043: 1.09: 56: …
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