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What is the tool diameter of the pilot hole and the tap of the American standard pipe screw? NPT NPSC NPTF NPSF
・ Pilot hole diameter
When machining pilot holes with a drill, refer to the value of "When not using a reamer" in the table below.
• Tool diameter of the tap
For the tool diameter when calculating the cutting data, refer to the number on the outer d
What is the pilot hole diameter and the tool diameter of the tap? Rc PT G PF
Please refer to the following link for the pilot hole diameter of the pipe screw.
You can check the pilot hole diameter and tap outer diameter of the following screws.
Tapered screw fo
In conversations with customers, we sometimes use the expression "I want a tap of Sambu."
Sambu is one of the so-called industry terms, and the size of the screw expressed in inches may be expressed as "○○bu".
1/8 = Ichibu (1 minute)
1/4 = 2/8 = Nib (2 minutes)
3/8 = Sambu (3 minutes)
1/2 = 4/8 = Yeonbu Sibu (4 min.)
The numerator when the denominator i
Both refer to the base material used for tapping.
SKS is an alloy tool steel.
・HSS is called high-speed tool steel.
The main difference between the two is the difference in high-temperature hardness.
In contrast to the cutting heat generated during tapping, HSS has a high high-temperature hardness even when the temperature rise
No, you can't.
If the pilot hole is pierced but the screw is not, consider it a "stop hole" and use spiral fluted tap .
In spiral pointed tap threading, chips leave the material only when the tap chamfer is completely penetrated.
If the spiral pointed tap
