pitch = 1/Threads per Inch
So for a 1/2 - 20 thread the pitch is .1
when lead of the screw is equal to the pitch it is called single threaded screw
Metric size #6 shank, 32 is thread pitch per inch. The bigger the no. the bigger the screw size.
acme thread
A thread gauge is a tool used for identifying the particular thread on a bolt or screw. The gauge will have several blades with saw like teeth of different sizes. You match a particular gauge to the thread which will then tell you what size thread it is. gauges come in various pitches to match different screw threads. UNF, UNC, Whitworth, Metric etc. Each has a different pitch angle and thread per inch or millimetre.An image of a thread gauge can be seen HERE
It depends which thread the screw is, the pitch and depth of the thread varies.B.S.F. - 5.3 mmWhitworth - 5.10 mmB.S.P. - 11.80 mmU.N.F. - 5.50 mmU.N.C. - 5.2 mmA.N.C., A.N.F. and B.A. threads are numbered, I.S.O threads are in metric
when lead of the screw is equal to the pitch it is called single threaded screw
the parts of the screw are thread, pitch, and the last is bolt
This is a tool that is used to measure the pitch diameter of a screw. This tool looks like a standard micrometer except that the anvils are specially configured to reach into the screw thread groove and touch the pitch diameter of the screw thread. The screw thread micrometer does not measure any other aspect of the screw thread. It does not measure the: pitch; threads-per-inch; major diameter; minor diameter; flank angles; lead; helix angle.
Thread
This is a tool that is used to measure the pitch diameter of a screw. This tool looks like a standard micrometer except that the anvils are specially configured to reach into the screw thread groove and touch the pitch diameter of the screw thread. The screw thread micrometer does not measure any other aspect of the screw thread. It does not measure the: pitch; threads-per-inch; major diameter; minor diameter; flank angles; lead; helix angle.
Pitch is the distance from the crest of one thread to the next. the displacement of the circular scale due to a complete rotation of the screw, along the main scale is called screw pitch..
what does a standard thread gauge measure
The pitch of a screw thread is a measure of how closely the threads are spaced. It can be expressed as the number of threads per unit length (32 threads per inch, for example) or as the distance between two threads ( such as .8 mm).
It refers to the diameter of the screw. More precisely, it is a 0.138" diameter screw. You can get it in with various head style and thread pitch.
The pitch is the axial distance between threads, and the distance the thread moves with a 360 degree revolution. So if the pitch of a screw is 1mm, one revolution will move it 1mm farther down.
Metric size #6 shank, 32 is thread pitch per inch. The bigger the no. the bigger the screw size.
It means that there is .5mm from a particular spot on one thread to the corresponding spot on the next thread