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A device to measure the tire's thread depth.
A PTF thread is the same as a NPT thread except that it has one thread less at the small diameter end. It is used when there are space (depth) considerations.
A device to measure the tire's thread depth.
demonstrates depth
It's the depth of the cut from the crest of the surface down to the base on a bolt or screw.
0.866xpitch
Effective or Pitch diameter.On a parallel thread it is the diameter of an imaginary cylinder which would pass through the threads at such a point that both male and female thread were the same width. This point is usually but not always 1/2 the thread depth. It is only at 1/2 depth when the root & crest radii are the same.
You measure it. If you want to calculate it, please clarify what information you have available.
Real depth Dr= Apparent depth/ refractive index of water Dr= Da / n water
Thread size of bolts is calculated by measuring the depth, width, and length of the threads. This helps to identify specific bolts and patterns.
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To calculate Cross Sectional Area: Width x Depth