A thread chaser is used to clean and restore damaged or dirty threads vs. a tap or, die which cuts threads.
A tap is a tool, a tap can cut or clean the threads of a bolt hole, there are differant diameters and thread pitch, a dye is the opposite of a tap it cuts or cleans the threads of a bolt.
When tapping a blind hole, the order of taps typically starts with a taper tap, which helps to lead the thread into the hole smoothly. Next, a second tap, usually a plug tap, can be used to further create the thread depth. Finally, if a finer finish or tighter tolerance is required, a bottoming tap can be used to clean out the bottom of the hole. This sequence ensures proper thread formation and reduces the risk of damaging the workpiece.
In general a female thread is cut with a tap. A male thread is cut with a die.
Cutting a thread on a shaft
STI stands for "Screw Thread Insert." When tapping a thread with an STI tap, you're typically preparing the hole to receive a threaded insert, commonly known as a helicoil or thread insert, which helps reinforce or repair damaged threads. My Recommendation 𝐡𝐭𝐭𝐩𝐬://𝐰𝐰𝐰.𝐝𝐢𝐠𝐢𝐬𝐭𝐨𝐫𝐞𝟐𝟒.𝐜𝐨𝐦/
A UNJF-3B tap is a type of threaded tap used to create UNJF (Unified National Fine Thread) screws with a 3B tolerance class. The "UN" designates the Unified National thread series, while "JF" indicates a specific thread form with a 60-degree angle and a rounded crest. The "3B" refers to the tolerance grade, which specifies the allowable deviation from the nominal dimensions for internal threads. This tap is commonly used in aerospace and high-precision applications where tight tolerances are crucial.
Taps and dies are used to thread . A tap threads a hole and a die threads a rod.
Assuming you mean "thread tap", it is for cutting new threads in a hole.
Taps and dies are used in threading. To make an internal thread, you drill a hole smaller than the thread width, then slowly screw a 'tap' into it cutting a thread very slowly. -For an external thread, you choose a rod or bolt larger than the final thread, then screw a hard, threaded disc down onto it.
National Pipe Tap, the angled self sealing thread of a pipe fitting
For a 9mm hole, you can use a tap set that corresponds to the M9 x 1.0 metric thread size. This tap set typically includes a taper tap for initial threading, a plug tap for deeper threading, and a bottoming tap for creating threads close to the bottom of a blind hole. Ensure the tap set is suitable for the material you are working with, such as steel or aluminum, for optimal results.