What is the use of Three wire method ?
The accurate measurement of thread pitch diameter, which may be perfect as to form and lead, presents certain difficulties which result in some uncertainty as to its true value. The adoption of a standard uniform practice in making such measurements is, therefore, desirable in order to reduce such uncertainty of measurement to a minimum. The “three – wire method” of measuring thread pitch diameter, has been found to be the most generally satisfactory method when properly carried out, and is recommended for universal use in the direct measurement of thread plug and thread setting plug gauges.
How to Calculate Diameter of Wire used Unified and National Threads?
Diameter of Wire used Unified and National Threads calculator uses Wire Diameter = (Micrometer Reading-Pitch Diameter+0.86603*Screw Pitch)/3 to calculate the Wire Diameter, Diameter of Wire used Unified and National Threads formula refers to the specific size of precision wires utilized in the three-wire method to measure the pitch diameter of these threaded components. This method ensures accurate measurement of the pitch diameter, which is critical for determining the fit and functionality of threaded connections in various applications. Wire Diameter is denoted by G symbol.
How to calculate Diameter of Wire used Unified and National Threads using this online calculator? To use this online calculator for Diameter of Wire used Unified and National Threads, enter Micrometer Reading (M), Pitch Diameter (D) & Screw Pitch (P) and hit the calculate button. Here is how the Diameter of Wire used Unified and National Threads calculation can be explained with given input values -> 1266.03 = (0.0082-0.007+0.86603*0.003)/3.