Tips

FAQ

No.28 Hex Shank Taps

Q: How can I calculate recommended pre-hole size?
A: The format of recommended pre-hole is that size – thread pitch = recommended pre-hole size.

For example, the recommended size of pre-hole for M4 ×0.7 is 3.3 (=4-0.7).

OTHEROther【FAQ】articles

  • 2021.05.18

    No.1-S Stopper …

    Precautions for use drill bits on the drill press Please be careful to use our Stopper Auger Bits on the…
    Attention
  • 2021.05.18

    No.27 SDS Shank…

    Q: Can I make a hole in stainless steel by using SDS Shank Iron Drill Bits? A: Yes, it is…
    FAQ
  • 2021.05.18

    No.51 Hex Shank…

    Q: Can I make a hole in autoclaved lightweight concrete panels (ALC) by hex shank siding drill bits (Carbide tool)?…
    FAQ
  • 2021.05.18

    No.20 Hex Shank…

    Q: Please kindly teach me one point tip to keep using the long period of Iron drill and our brand…
    FAQ
  • 2021.05.18

    No.22-M Dowel M…

    Q: Please kindly teach me how to use Dowel Marker. A:  Step 1: using hex shank dowel bits to make…
    FAQ