Ways to Measure the Outside and Inside Pitch Diameter of a Screw Thread
When it comes to finding the right screws, various measurements need to be considered. Though length and diameter of the screw shank are the most obvious measurements, other aspects should also be measured to achieve the accurate fit. Among various parameters for measuring threaded parts, pitch diameter is a crucial component. It is the simple effective diameter of screw thread and is approximately halfway between the major and minor diameters. Typically, it is used to determine whether two threaded parts could be successfully mated together or not.
For instance, if a wrong pitch is used, the screw cannot be securely fastened. As a result, this can cause problems for any application, especially when using it for security purposes. Furthermore, pitch diameter can also be used as a reference for other thread measurements. For screws supplied with a standard thread pitch , you don’t need to Measure the Outside and Inside Pitch Diameter. However, in some cases, thread dimensions may not be available. Fortunately, there are several techniques used to quantify this dimension. Some of them are discussed below:
Common Methods Used for Measuring Pitch Diameter in Threaded Objects:
- Thread Gauges:
The specialized device is designed for measuring the diameters of threaded parts. It can provide easy and accurate measurements. However, gauges are usually time-consuming and can be difficult to calibrate.
- Three Wire Measuring System:
This process involves placing three wires of known thickness within the pitch of the threads. Though it offers an accurate and consistent reading, it has several limitations. This approach requires extra time to make calculations.
- Thread Inserts:
Thread inserts are a common choice of measurement due to its effectiveness. Besides providing accurate results, it does not require calculations. All types of external and internal thread type pitch diameters can be measured with these devices.
For automotive, aerospace, and many other industries, threads play a significant role due to stringent requirements and intense operating conditions. Any failure in the system can lead to catastrophe. As a result, manufacturers ensure that the quality requirements are met. In case you choose manual methods to Measure the Outside and Inside Pitch Diameter, mistakes are made and you may need to spend valuable time and money in eradicating those errors. Lastly, approach a trusted and reputed company that can allow the measurement process to be faster, smarter, and productive.
