Thread inspection - What should you know?
If you are manufacturing or fabricating machine parts that include threaded components you will need to make sure that your quality control checklist includes thread inspection as one of the top test items. Whether it is a nut and bolt or any other threaded component, highest level of accuracy needs to be maintained. You will need to adhere to the specifications document to the last details. You cannot deliver to approximate values but to exact specifications.
Before sending out the products that are manufactured in your unit, it is essential that the parts you have manufactured are subjected to stringent quality control tests. You will need to make use of metric thread gauges or UN thread gauges that are still in good condition to check the accuracy of the thread.
Very often the purpose of testing is totally forgotten and the test process is handled very mechanically using worn out UN thread gauges. What is the use of running such a test process if it is not going to establish whether the threading in the components manufactured meets the required specifications or not? Always make sure that the thread gauges are in top-notch conditions.
In order to get the best value for your money, always go for the best quality gauges. Poor quality gauges will not only be manufactured to meet the expected standards but it will also not be able to withstand the wear and tear.
The technician using the thread gauges should be adequately trained in the testing process and on how to handle the thread gauges without damaging the gauge. For example, if the manufactured component is not accurate and slightly bigger than the standard size the untrained person will try to force the threaded part into the tool and thereby damaging the thread. It will in turn affect the accuracy rate of the gauge after a few such attempts. The thread gauge should therefore be handled by someone with at least basic knowledge on the testing process.
It is also equally important in storing the test equipment in the right conditions. It should not be exposed to moisture but stored in dry places. Moreover, while buying your thread gauges, you should go only for the best quality gauges. If you order from a reputed supplier of gauges, you need not have to worry about the quality.
At times you may need to go for custom thread gauges. Not all suppliers are cable of supplying you with custom gauges. You need to screen carefully to identify dependable custom thread gauge supplier. While placing your order, you will need to make sure that you are giving them accurate requirements. You cannot send them approximate specifications but the exact measurements. When you place orders for custom thread gauge, you will not be able to get an exchange or return your tool if something goes wrong unless the mistake is committed by your supplier and you can prove that. You are required to be extra cautious here.












