![]() * Values are calculated for Length of engagement of 5xPitch. * Permisable values for thread Class 3A # Description Value (Inch) Value (mm) es Allowance 0 (Ref) 0 (Ref) d Major Diameter 0.0568 - 0.06 1.443 - 1.524 d 2 Pitch Diameter 0.0506 - 0.0519 1.285 - 1.318 d 3 Minor Diameter For calculations of different engagement length use the Thread Calculator To get the tap drill size in other depths, use our Tap Drill Size Calculator. You can learn more about thread depth in tapping here. * Values are calculated for Length of engagement of 5xPitch. If not specified, assume a thread depth of 75. Closest Imperial Drill Size Closest Imperial Drill Size Closest Imperial Drill Size Closest Imperial M1.5 x 0.35 1.5 0.35 1.15 56 1.60 55 1. Below is a comprehensive drill and tap size chart for all drills and taps, imperial and metric, up to 36.5 millimetres (1.44 in) in diameter. (UNR Only) 0.0446 (Ref) 1.133 (Ref) α Varation of 30° anngle (+/-) 3 (Ref) 76.2 (Ref) P Varation of pitch (+/-) 0.0005 (Ref) 0.013 (Ref) Metric Tap Chart Tap Drill Clearance Drill Aluminum, Brass, Plastics Steel, Stainless Steel, Iron Close Fit. The result is 4.0 mm - 0.8444 mm 3.1666 mm, which is the necessary diameter for the drilled hole. Match this row to the 65 thread percentage column. * Permisable values for thread Class 2A # Description Value (Inch) Value (mm) es Allowance 0.0005 (Ref) 0.013 (Ref) d Major Diameter 0.0563 - 0.0595 1.43 - 1.511 d 2 Pitch Diameter 0.0496 - 0.0514 1.26 - 1.306 d 3 Minor Diameter Find the drilled hole size for a 65 thread on a 4 mm x 1.00 (M4) tapped hole: Look for the 1.00 mm pitch in the chart's first column.
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