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Thread Points : Thread, Definition, What do you mean by thread, Thread is an working element of impermanent fastening. It is use on bolts, nuts, cap screws, wood screws and additional similar parts also for adjustment or transmitting power. Screw threads occur in one shape or one more. The actual shape of the screw threads is not drawn on machine dray in but they are represented in a conventional or simplified forms Screw thread is helical projections the cylindrical surface of a round rod. Helical projection means which winds around the rod as well as it advance in the axial direction at uniform rate. A gap or depression is left in among any one of the two consecutive projections which are also advance in a helical form.

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