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Did you know? There are many types of threads for self-tapping screws!

Last updated: 4 Jun 2024
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When buying self-tapping screws You may see the words Type A, B or AB and wonder what the difference is? Let's get to know each other better.

1️ Type A: The screw can perform both driving and drilling functions by itself.
  • Suitable for working with soft/medium wood
  • Pointed tip helps drill, no need to drill a hole first
  • Good for general DIY work
2️ Type B: For this type, pilot holes must be drilled first.
  • Suitable for working with hard wood or hard plastic
  • The tip is not sharp, you must always drill a hole first
  • Lower torque than Type A reduces the chance of wood breaking
  • Has a higher thread frequency than Type A, making the thread groove shallower (bite less wood)
3️ Type AB: The perfect hybrid
  • The tip is pointed like A, but the body is tightly threaded like B
  • Can be used on both soft and hard wood
  • Self-drilling in softwood. But you should use a drill to drill into hard wood first
  • Suitable for technicians who work in a variety of jobs
  • Popular in the Thailand market

Click here to buy the self-tapping screw


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