How to calculate the amount of threads in screws


Have you ever assembled a new machine and lost a screw?   How do you know which one is the right one?  How do you know the proper amount of threads in a screw?  Today, Tom Greene walks us through how to manually calculate the amount of threads in screws so you never have to worry again.

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Directions for Use

  1. Enter your data parameters into the fields on the left
  2. Click the green arrow in the center of the calculator
  3. Your answers will appear in the fields on the right
-- change calculator using buttons below -- Tap Drill MM Tap Drill RPM SFPM Helix Angle

Tap Drill Size




MM Tap Drill




RPM



SFPM



Helix Angle