Thread chasers are used to cut screw threads. They are one of the important parts for a threading die. One set of chasers would be used at a time, each chaser is inserted into the die head (in the correct order) and the die head is closed bringing the chasers down to their cutting position. When sufficient length of thread has been cut, the die head will open allowing for rapid retraction of the head without interference with the newly formed thread.
The threaded chaser include P2.0, P2.5, P3.0, P3.5, O4.0, P4.5, six different specifications.
Titanized chasers can be manufactured specially!