when lead of the screw is equal to the pitch it is called single threaded screw
acme thread
screw gage
You can find one online at many different stores. You can try www.precisionscrewthread.com or www.Ball-Screws.Industrial101.com. Ball Screw thread is very advanced and complicated technology. For getting ball screw thread you will need good and advanced CNC machine.
A wood screw will have a courser type thread and will have a sharper point.
The angle of a thread of a screw is an angle between the threads and it is the defining factor for the shape of the screw thread.
when lead of the screw is equal to the pitch it is called single threaded screw
it is what allows the screw to grip into the material its being screwed into. a screw without a thread is a nail
acme thread
Yes, a parallel sided screw thread is in effect a worm gear.
when a spiral groove is cut over a hole, then it is nut thread. when a spiral groove is cut over a shaft, then it is screw thread.
The ANSI B1.11 Microscope Objective Screw Threads standard covers the single screw thread size: 0.8000"-36 AMO. The standard lays out the screw thread parameters and the parameters for screw thread gauging. There is some mis-information published on the web related to this screw thread which is corrected at this webpage: http://www.ring-plug-thread-gages.com/ti-spec-ANSI-ASME-B1.11.htm
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.
If you mean 'Screw Thread' I will give examples, but first understand that the word screw is a process. It is something you can do. We often say 'Screw these pieces together'. Now some examples :- Top of a toothpaste tube with a screw on lid. top of a jar of food with a screw on lid . A screw thread inside a water tap handle. Most common of all of course is a wood screw, and a metal thread screw or bolt.. Also the screw thread on the cap of a bottle of soft drink.
the parts of the screw are thread, pitch, and the last is bolt
screws have something called a thread, and this thread wraps around the screw. You can call the thread a kind of ramp, because this thread prevents the screw from falling off.
An acme thread is the most commonly used.