HomeAppsToolsDrill and Tap CalculatorApps like Drill and Tap Calculator Here are some great alternatives to Drill and Tap Calculator by ReidenBike : Machine Screws Drill/Tap Info ★4.7 Drill Bit Charts Pro ★4.8 Thread calculator ★4.1 Screw Thread Data Calculator ★4.6 Thread pitch gauge ★4.1 Thread calculator ★4.4 Nuts & Bolts ★3.8 Dr DE Lite - Drilling Engineer ★4.3 Nuts & Bolts PRO ★4.6 CNC Machinist Calculator Ultra ★3.7 iMachinist ★3.4 Machinist Calc Pro 2 ★4.8 Machining calculator ★3.7 Thread Cutting & Calculators ★3.9 Engineering Weight Calculator ★4.3 Machinist Calc Pro Calculator ★4.5