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Stainless Steel Lag Bolts SS Grub Set Industry 80mm Cross Cross Countersunk Head Self Tapping Screw

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Self-tapping screws are suitable for the use of wood material, which is often referred to as wood screws. Generally manual operation, due to manpower restrictions, this kind of screw is generally very small, the scope of use is relatively narrow.

Tapping screws combine taps with bolts. The front is the tap, the back is the thread. In general soft materials, drill a hole can be directly screwed into. Tap the thread from the tap, followed by the bolt thread. If the screw diameter is small, the material is also very soft. You don't even have to punch a hole first, like screw it into a piece of wood.

Self tapping screw is simply a screw that can tap itself. The difference between self-tapping screws and ordinary screws is that ordinary screws must have a processed screw hole to screw in. Self tapping screws do not need to screw in at the same time their own tapping. In order to achieve their own tapping purposes, the hexagonal drill tail screws are generally pointed, in order to facilitate squeezing into the object to be screwed into.

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