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Re: Threads
Re: Threads -- ashish	Post Reply	Top of thread	Forum

Posted by: jboggs ® 04/20/2007, 17:59:01 Author Profile eMail author Edit

You could answer your question by simple observation. Look carefully at the position of a nut on a screw, turn it one time and you can see how many screw teeth disappeared into the nut. Almost all threads used in fasteners are single-start threads, that is one thread per turn. Some screws used in actuation devices have multiple (double, triple, quadruple) start threads. Look at the end of a candy cane and you can see how many red stripes there are around the base. Each one is a "start" of a thread.

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Re: Threads
Re: Threads -- ashish	Post Reply	Top of thread	Forum

Posted by: randykimball ® 04/19/2007, 16:33:49 Author Profile eMail author Edit

360° is one thread pitch if the thread is a single lead thread (normal thread) Realize there are threads that are of multi-lead pitches. This means there are more than one thread start on the end of the shank or bore. These threads are used to speed up the distance traveled per revolution. Such threads would be found in camera zoom lenses, for example. The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.

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