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China Factory 410 316 304 Stainless Steel Cap Head Self Tapping Screw Product：

Tapping screws are used for non-metallic or softer metals. No need for low holes and tapping; Self-tapping screws are pointed so that they can be "self-tapping ": ordinary screws are flat and of the same thickness. Self tapping screw is to say: drill holes without tapping holes, the screw and the general difference, the head is pointed, the tooth distance is relatively large, and the chip free wire tapping is a bit like, can not tap directly screw in, metal and plastic usually use this method. It can be consolidated on the material, relying on its own thread, will be consolidated body "tapping, drilling, squeezing, pressing out the corresponding lines, so that they closely match each other.

Self-drilling screw with tapping screw is a kind of screw, with a bit through a dedicated electric tool construction, drilling, tapping, fixed, a complete lock, self-drilling screw with tapping screw sheet is mainly used in some parts of connection and fixed, such as choi steel connection with choi steel, color steel plate and purlin, wall beam connections, etc., its penetration is generally not more than 6 mm, not more than 12 mm;

Self-drilling and tapping screws are often exposed outdoors and have strong corrosion resistance. The rubber sealing ring can ensure that the screw is impervious to water and has good corrosion resistance;

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