They come in three main sizes – 1/4”, 5/16”, and 3/8”. Sometimes these sizes will be slightly small for the screw at hand. Nutsetters are similar to a hex bit, except they fit over their corresponding screws (in this case, tek-screws), rather than into them. The standard size for most hex-drive screws is 5mm. Internal Hex Bitsīasically an allen key that you can put in your drill, these hex bits are commonly used when assembling DIY furniture and for locations where surrounding obstacles limit allen key access. They are generally used on anything that people don’t want you to have access to, and sizes again range from Tto T20. Instead of being solid, they have a hole in their centre to accommodate security screws, and to prevent the use of standard torx bits. Tamperproof Torx Bits are a variant on standard torx bits.
They resist cam-out better than Phillips or slotted bits, and were specifically designed with this purpose in mind due to the improvements in torque-limiting automatic screw driving tools. Torx bits are shaped like a 6-sided star and are used on anything from cars to consumer electronics. When using high-torque fastening tools like cordless impact drivers, it is important to purchase screwdriver bits that are rated for this type of use so as to ensure the bit’s longevity.
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There are many different types of screw driver bits available on the market, but here is an overview of the most common. It is important to note though that due to the nature of their design they will not fit into a ¼” (6.35mm) hex drive chuck. They can potentially give the screwdriver bit double the life of either an insert bit or a power bit at much less than double the cost. Double Ended Bitsĭouble ended bits feature a screwdriver bit on either end (either the same or different types). When drilling tile or glass use the spear point at low speeds.Ī hole saw is great to make large holes, but make sure the drill can handle the extra force or your burn the motor out very quickly. When drilling concrete, brick, slate or plaster use masonry bits at low speeds. If you keep the before points in mind, you can easily go out to the market and buy screwdriver bits, right? No! Drilling Tips
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