Torx (pronounced /tɔːrks/) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967 by Camcar Textron. A popular generic name for the drive is star, as in star screwdriver or star bits.
Phillips screwdrivers fit in Pozidriv screws, and can turn them. However, they are liable to slippage, and can damage the screw. Pozidriv screwdrivers, on the other hand, do not fit Phillips heads. If you try, you'll probably fail, and you'll probably damage your screw.
The Pozidriv drive style has the same self-centering design of a Phillips drive style but improves upon the two following factors: Increased torque without cam-out. Greater surface contact engagement between the drive and the recess in the fastener head making it harder to slip when installed correctly.
The Phillips Screw Company and the American Screw Company patented a cross-head screw with parallel flanks which prevents the ejection force during tightening or loosening. The name Pozidriv is the abbreviation or acronym for "positive drive".
The advantage of Torx® is the better drive, requiring less pressing force than with the Pozidriv impression. The risk of damaging the screw is lower because the bit less easily shoot from the head. Torx® know impressions in addition, a larger variation in the size of the bits.
Torx screws are typically used in vehicles, motorcycles, bicycles, computer systems, hard disk drives and consumer electronics. The unusual star-shaped head makes them far more secure than regular flat-head or cross-head screws and allows higher torque transmission so screws and bolts can be tightened more securely.
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.
The Pozi drive, often known by its trade name, Pozidriv, or misspelled as Posi, Posidriv, or Posidrive, was patented in 1963 as an improvement upon the Phillips Drive, which was, itself, an improvement upon the archaic slotted recess.
Cross screw heads used in IKEA products are often Pozidriv screws, which are commonly used in Europe. When assembling IKEA furniture, you can use a screwdriver for the cross (Phillips) screw heads commonly used in Japan.
Pozidriv describes the screw drive type of the socket and driver, and is one of the most common screw drives used worldwide.
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.
The hexalobular socket screw drive, often referred to by the original proprietary brand name Torx ( /ˈtɔːrks/) or by the alternative generic name star drive, uses a star-shaped recess in the fastener with six rounded points.
What exactly is a tamper proof Torx bit and what purpose does it serve? Simply put, they are Torx (or Star) screwdrivers that have a round hole in the middle to match the Star/Torx screws that have a pin. Tamper proof screws are usually inserted so they cannot be interfered or changed easily.
Phillips strip VERY easily. Particularly with some of the cheap and nasty Phillips screwdrivers out there. Torx rarely strip, and are a million percent preferable over Phillips.
Fill the stripped head of the screw with a glue (such as epoxy, but hot-melt glue is quick and works very well) and stick the screwdriver in. Wait for the glue to dry or cool, and then apply even pressure as you rotate the screw.
A Torx screw is a six-lobed, star-drive socket or external head. A Torx screw is a type of screw characterized by a six-lobed, star-patterned screw drive. Torx drive is a trademark commonly referred to as star drive or, simply, a six-lobe. It's often abbreviated to TX or 6lobe.
In a maintenance environment Torx head screws are often used to prevent people who have no business accessing certain panels and machines from accessing those panels and machines. People are more likely to have screwdrivers and Allen wrenches than they are Torx drivers or a Torx bit set for a socket wrench.
Most historians attribute its lack of popularity in the United States to Henry Ford. Having been nearly bankrupted by shady European licensees, Robertson refused to license his invention to Ford. Without a guaranteed supply, Ford turned to the Phillips-head screw, cementing its reign in American industry.
The most common Torx screws are T6, T8, T10, T15, T20, T25 and T30. All Chapman Star driver sets contain the bits to drive those screws. Coming in close second to the most common sizes are T27 and T40 Torx screws, and Chapman's larger Star bit sets contain those drivers.
One of the most significant differences between Pozi head and Phillips head screws is their shape. Pozi screws have a unique cross-like design that is similar to Phillips screws, but with four additional points. This design reduces cam-out and makes them more resistant to stripping than Phillips screws.
The most common PoziDriv sizes are 1, 2, and 3 (from smallest to largest). PoziDriv bits typically have "PZ" indicated on them. Note: Phillip's drivers should not be used with PoziDriv screws (and vice versa) as they tend to ride out of the recess and will damage the driver and the screw.
A lag screw is the strongest in the family of wood screws. It is a sturdy and durable fastener often designed with an externally driven hex drive or square head. Lag screws feature a tapered point and coarse threads and are typically tougher and much heavier than conventional wood screws.