They are generally used on anything that people don’t want you to have access to, and sizes again range from T1 to 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.
#Different types of drill bits chart driver#
They aren’t often seen in applications where a power tool would be used however as the driver bit tends to slip out of the head and can potentially damage the surrounding material. Screwdriver tips are still made for them however, and the gauge of screw they drive defines their size. Slotted head screws aren’t very common anymore, but used to be the most popular type of screw available. They come in three main sizes – #1, #2 and #3 (#2 is again the most common). This design also provides a greater driving surface and decreases wear.
The Pozidrive screw driver is an improved version of the Phillips screw drive with an additional four contact points. These points decrease the likelihood the bit will cam-out, which allows greater torque to be applied. Check out Phillips Screwdriver Bits Pozidrive Bits
Philips bits look very much like a cross, and come in a range different sizes – #000, #00, #0, #1, #2, #3 and #4 (#2 is the most common). Phillips, the Phillips screw driver was purposely designed to cam-out when the screw stalled, to prevent the fastener damaging the work or the head, instead damaging the driver. This is the most common type of screwdriver bit in Australia mainly because they drive the most popular type of screw. 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. There are many different types of screw driver bits available on the market, but here is an overview of the most common. Kincrome K21010 81 Piece Magnetic Impact Driver Bit Set Most Common Screw Driver Bit Types Makita 100 Piece Impact-X Magnetic Driver Bit Set Check Latest Price Milwaukee 64 Piece Impact Driver Bit Set Check Latest Price 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 Screwdriver Bitsĭouble ended bits feature a screwdriver bit on either end (either the same or different types). Power bits are designed to fit straight into a drill’s chuck, but as they are of longer length, replacement costs are a little higher. Insert bits have an extremely short shank, cost the least out of all screwdriver bits, and are designed to clip into a magnetic bit holder. There are three styles of screwdriver bits available. Screwdriver Bit StylesĪll screwdriver bits have what is known as a ¼” hex shank, and are able to fit into any drill with either a keyed, keyless, or ¼” (6.35mm) hex drive chuck. All screws have a head with a contour such that an appropriate screwdriver tip can be engaged in it in such a way that the application of sufficient torque to the screwdriver will cause the screw to rotate.Įach screwdriver bit has different types of shanks and tips to suit different screws and applications – all are described in depth below. A screwdriver bit is a tool for driving screws and one that can be fitted to most drilling power tools.
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