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What is a self-tapping screw
Time：2015-04-22 19:29:47Click rate：
Self-tapping screws
Generally fingertip head coarse teeth, hard wood screws, there are aluminum, plastics. A special self-tapping screws for metal threaded hole opening is called tapping. Self-tapping screws are used for non-metal or soft metal, do not hit the bottom hole and tapping; self-tapping screw is pointed, so as to "self-tapping"; common screw heads are flat, the same thickness.
Self-tapping screws are saying: Drill a hole for the tap hole without using screws and general different, head for the sharp, tooth distance is relatively large, with no crumbs tapping a bit like, you can not tap directly into a spin , metal and plastic typically use this method. It can be consolidated on the material, by its own thread, will be consolidated body "attack - drill, squeeze, push 'the corresponding thread, so that work closely with each other.
Generally fingertip head coarse teeth, hard wood screws, there are aluminum, plastics. A special self-tapping screws for metal threaded hole opening is called tapping. Self-tapping screws are used for non-metal or soft metal, do not hit the bottom hole and tapping; self-tapping screw is pointed, so as to "self-tapping"; common screw heads are flat, the same thickness.
Self-tapping screws are saying: Drill a hole for the tap hole without using screws and general different, head for the sharp, tooth distance is relatively large, with no crumbs tapping a bit like, you can not tap directly into a spin , metal and plastic typically use this method. It can be consolidated on the material, by its own thread, will be consolidated body "attack - drill, squeeze, push 'the corresponding thread, so that work closely with each other.
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