The torx is perhaps the most widely used type of security screw. It is also known as the star head or star drive screw because the six-pointed indentation on the head resembles a star. The torx head was devised in 1967 following the invention of automatic screwdrivers.
These bits are also called snake-eye bits since the two pins look like eyes. Torx: Torx security bits are used with Torx screws, characterized by a six-pointed star recess with a central protruding pin. Torx bits have a hole to fit this pin to make adjustments.
It is for this reason that sentinel screws, clutch head screws and permanent Kinmar bolts are the most secure of the lot as these are all one-way screws. That is to say they can be turned one way to screw them in but not the other way to remove.
A version known as Security Torx, Tamper-Resistant Torx (often shortened to Torx TR) or pin-in Torx contains a post in the center of the head that prevents a standard Torx driver (or a straight screwdriver) from being inserted.
Phillips screwdriver bits and sets
Phillips screwdriver bits are among the most widely used of all types today.
#1) Phillips-Head
Arguably, the most common type of screw drive is Phillips head.
The tamper resistant Torx Plus Drive variant (security Torx) uses a pentalobular (five point) design with a solid security pin at the centre of the recess. All of the Torx Plus benefits are included in the tamper resistant version along with additional security provided by the 5 lobe design with a central security pin.
Security Torx, or tamper proof Torx screwdriver bits have the exact same exterior shape as regular Torx or Star screwdriver bits, but have a small hole drilled in the end to accept the small pin located in the center of security Torx screws.
A: The head of a "tamper proof" screw has the torx star with a peg in the middle. These bits have a drilled center to accommodate that peg. These bits will also work on all regular torx head screws.
KEY-REX® PATENTED ELITE-SECURITY LEVEL
New shapes are continually arriving on the open marketplace only to be followed by easy-to-find drivers that match them. Our answer is the Key-Rex®. The essential difference is that each customer's fasteners can only be used by them.
One-Way screws are available in a round head design in both machine and sheet metal types in sizes ranging from #6 to #14. They are slotted screws and can be installed with a standard slotted screwdriver.
One of the most popular types of screw for fixing metal is the self-drilling screw. Self-drilling screws do not need a pilot hole to cut through the metal and are good at fastening metal to metal or wood to metal.
Security Torx screws are often called Pin Torx due to the additional pin at the centre of the six-point star socket head. This centre pin makes it impossible to use a standard Torx screwdriver, making this type of fastening tamper-proof.
Triple Square and Double Hex Specialty Screwdriver Bits
Both Triple Square and Double Hex screwdriver bits take the Torx idea to another level. Both bits have 12 points instead of 6. They're also much shallower points than you find with Torx bits.
Traditional security screws, also known as tamperproof screws, are otherwise standard screws but with a unique head, making it nearly impossible to remove with common tools. That used to mean that any screws that couldn't be removed with a slot-style or Phillips® head driver could be considered security screws.
Double Square
The head looks like a star with 8 points. A square bit is used on this drive and it is a called a double because the bit can be inserted two different ways.
torx 5 point screwdriver bit.
The answer is no – torx and Allen keys are not the same. They're used for more or less the same purpose, though Torx keys feature a star or asterisk-shaped cross-section, rather than the hexagonal shape of an Allen key.
Here you can see the difference between a hex head (on the right) and a Torx head. Torx bits have a higher surface area for torque application, as well as a 15º drive angle compared to the hex's 60º which ultimately means increased tolerance, effectiveness and far less tool slippage.
The screwdriver head is also known as the Torx Security TR6 and is compatible with standard Torx T6 fasteners.
#1) Wood Screw
Perhaps the single most common type of screw is a wood screw. Wood screws aren't made of actual wood. Rather, they are used to connect two or more solid wooden objects.
The Shank and the Threads
Shanks and threads come in different sizes. The diameter is indicated by a number. The most common wood screws are number 6, 8, and 10, the larger the number the bigger the thickness. I almost always use #8 diameter screws.
Unified National Coarse Thread (UNC) The Unified screw thread is a standard thread, which is mainly used in the USA and is the American equivalent of the Metric ISO thread. Only the unit of measurement inch instead of centimeter is used. The flank angle is – as with the ISO thread – 60 degrees.