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Is there a list of tap pilot hole diameters?
You can refer to it from the following link.
What kind of tap is Synchro Tap?
A synchro tap is a tap dedicated to a machine (also called synchronous, rigid, or direct) equipped with a complete lead feed mechanism that can accurately send one lead per revolution.
General-purpose taps have a margin on the outer periphery to ensure "self-guidance" during processing by the tap itself.
With a synchro tap
In terms of OH accuracy, if one number goes up, how much will it be oversized?
P0.6 or less is 15 μm, and P0.7 or more is 20 μm.
In forming tap , it is 12.7 μm over. ( In forming tap , the expression of tap precision is RH precision.) ）
Currently, the standard tap accuracy for aiming
What is the part with food?
The bite part is the name of a part of the tap, and the tip is shaped like a diagonal tip.
This part bites into the workpiece and processes the screw while cutting or raising it.
In the case of hand taps, #1, #2, and #3 are displayed on the case to indicate the length of the bite.
There is no indication of this on the actual product. The
Please refer to the table below for the pilot hole diameter of the insert screw tap.
Cutting taps for insert screws
・A-SFT HL
・EX-HL-SFT
・EX-HL-POT
・HL-HT
Rolling taps for insert screws
・HL-B-NRT
0.5625-18UNJF is the inch notation of 9/16-18UNJF.
Even with 9/16-18UNF taps, the shape of the internal thread is the same, so if the accuracy is correct, machining is possible.
(The pilot hole diameter of the UNJF must be varied from the size of the UNF.) ）
However, you need to pay attention to the thread accuracy.
Screws with a
