Thread

A continuous thread of uniform section and as a propeller Funky on the exterior surface and interior of a cylinder or cone.
The designation or nomenclature of the thread is to identify the main elements involved in the manufacture of a given thread, is by means of its representative point and indicating the size of the outer diameter and pitch. The latter is indicated directly in millimeters for metric thread, while the unified Witworth thread is indicated by the amount of existing wires within one inch. For example, Thread M 3,5 x 0,6 indicates a normal metric thread 3,5 mm outer diameter with a step 0,6 mm for all lengths. La rosca W 3/4 ”- 10 equivalent to a normal thread Witworth 3/4 inch outside diameter and 10 threads per inch.
The main types of thread are used in Electricfor:
• Metric Thread: Screw system defined by the organization ISO, currently adapted in virtually all countries.
In this case the metric measuring it corresponds to the outer thread diameter in mm and the step specified below metric is also in mm.
Two types; metric thread M- y rosca fina MF-. The latter is the one used in industry nuesro, although everyone calls it “metric thread”. To avoid confusion it is best to always specify the step.
• Rosca Gas: System derivative Whitworth screw thread which is characterized by a high sealing, thank the steak is not rounded.
Is defined as “rosca cilíndrica Whitworth para tubos” abbreviated and may appear as threads G – o BSP – (British Standard Pipe). As a pipe thread outside diameter is related to the inside diameter of the pipe plus the thickness of the wall
• Rosca PG: Pipe thread Power Line. Out of date, it gradually replaced by the metric.
• Thread NPT: American conical threaded pipe.