Tapping Screws-Zinc coated
A tapping screw, also known as a self-tapping screw, is a type of fastener designed to create its own internal threads as it is driven into a material, such as metal, plastic, or wood. Unlike traditional screws that require a pre-drilled hole with matching threads, tapping screws have a sharp or pointed end and special threads that enable them to cut or tap their own mating threads.
Tapping screws are commonly used in applications where you need to fasten two or more materials together, or when you want to attach an object to a material that does not have pre-existing threads. By using a tapping screw, you can create strong and secure connections without the need for additional nuts or threaded inserts.
There are different types of tapping screws available, including:
Sheet Metal Screws: These screws are designed for fastening thin metal sheets together. They typically have sharp threads and a pointed tip.
Thread Forming Screws: These screws are used for plastic and soft metals. They have unique thread designs that allow them to form mating threads by displacing the material rather than cutting it.
Thread Cutting Screws: These screws are used for metals and hard plastics. They have sharp cutting edges and are designed to remove material as they create threads.
Tapping screws are available in various sizes, materials, and head types, such as flat head, pan head, or round head, to suit different applications. When using tapping screws, it’s important to choose the right size and type based on the materials you’re working with and the specific requirements of your project.
Remember to use appropriate tools, such as a screwdriver or power drill, to drive the tapping screws into the material. Be careful not to overtighten them, as it can strip the threads or damage the material.
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NameSizeStandardMaterialHeadDriver Type
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ST3.5×13 Self drill screwST3.5x13DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.5×16 Self drill screwST3.5x16DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.5×19 Self drill screwST3.5x19DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.5×22 Self drill screwST3.5x22DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.5×25 Self drill screwST3.5x25DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.5×30 Self drill screwST3.5x30DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.5×6.5 Self drill screwST3.5x6.5DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.5×9.5 Self drill screwST3.5x9.5DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.9×13 Self drill screwST3.9x13DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.9×16 Self drill screwST3.9x16DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.9×19 Self drill screwST3.9x19DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross
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ST3.9×22 Self drill screwST3.9x22DIN 7504Carbon Steel, Alloy Steel, Stailess steel 410Countersunk head, Flat head, Hexagon head, Pan head,Hexagon head, Phillips,Cross