The internal thread effective diameter, which used to be difficult to determine, can now be measured with readable values.
When the effective diameter of the limit gauge is minus, the radius correction value of the thread mill cannot be determined. However, with the use of the thread mill Diameter Correction Tool (DCT), the effective diameter can be measured with readable values. Proper diameter correction value can eliminate the risk of hole expansion, allow appropriate adjustment and significantly reduce setup time.
Knowing the internal thread effective diameter value can help maintain the same effective diameter after exchanging tool. As long as the starting position is the same, it can be aligned to help predict and stabilize tool life.
Three Support Tools for Your Thread Milling Needs
Get the value of the effective diameter at a glance by simply inserting the DCT into the thread and releasing the scale sleeve once it has reached the deepest position