Phillips Screw Company". Phillips-screw.com. Archived from the original on 2017-05-02 . Retrieved 2017-05-01.

The polydrive screw drive, also known as RIBE, [74] is spline-shaped with rounded ends in the fastener head. The tool has six flat teeth at equal spacing; the sizes are determined by the diameter of the star points. Its primary advantage over older screw drives is that it resists cam out. It is used primarily in the automotive industry in high-torque applications, such as brakes and driveshafts. Torx Paralobe is a further improvement over Torx Plus, [48] claiming 50% increased drive system torque over Torx and 20% over Torx Plus. 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.a b Thompson, Avery (October 10, 2016). "11 Strange Screws You Don't See Every Day". Popular Mechanics. Archived from the original on August 4, 2020 . Retrieved September 5, 2020. A Phillips screw head is slightly different from a PoziDriv; [10] see §Pozidriv section below for details.

Spanner-Bolts". Loss Prevention Fasteners. Ultra Fasteners Inc. Archived from the original on 2015-09-26 . Retrieved 2015-09-25. ISO 4754-1983(E) Cross recesses for screws" (PDF). Archived from the original (PDF) on April 30, 2023 . Retrieved October 1, 2023. ISO 8764-2:2004(E) Assembly tools for screws and nuts — Screwdrivers for cross-recessed head screws — Part 2: General requirements, lengths of blades and marking of hand-operated screwdrivers" (PDF). Archived (PDF) from the original on 2023-04-30 . Retrieved 2023-05-01. Hi-Torque slot drives were designed by Alcoa Fastening Systems, for situations where very high torque is needed, along with the ability to repeatedly install and remove the fastener. [7] The design features curved walls, unlike the straight-walled slot drive. a b c d e "screw drive systems". Sizes.com. 2010-12-30. Archived from the original on 2012-03-13 . Retrieved 2012-03-12.Lox: Screws Designed for Power Tools". www.lox.com. Archived from the original on 2017-12-09 . Retrieved 2017-12-24. The answer to the second question is: “No, they are not the same”. What about the first question? That’s a bit more difficult. I’ll try my best to answer it, but first, a short note on a standard (two, in fact) that often gets confused with the above-noted standards: Line Head and Line Recess screw drives are Japanese systems with male, female and tamper-resistant configurations. [72] Took me a lot of time to figure this out and get all the data. Yet, take this article as: “to the best of my knowledge”. Any additions or corrections are welcome. Now I’ll list the most widely used types, first the obsolete, then the current standard ones, sorted chronologically, so it can be understood more easily.

If it were up to me – I’d dismiss all the grades for a start, and try to figure out what each particular kid is best at, most inclined to. The Good news: yes, there are more than one manufacturer (and model) of good quality cross-head screwdrivers (some more recommendations are in Chapter 4).

Sizes are: M4, M5, M6, (M7), M8, (M9), M10, (M11), M12, (M13), M14, (M15), M16, (M17) and M18 (the sizes in parentheses are less commonly used, but they do exist). Despite the similar naming scheme to metric fasteners, there is no correlation between the name of the size and the dimensions of the tool. Some sizes (at least M14, M16, M18) are also available in a tamperproof version (with a center hole) On paper, it differs a lot from Phillips, but in real life, people often confuse the two – which results in damaged screws that can no longer be unscrewed even using a matching screwdriver. I even got some Japanese ones by Vessel, and they too are marked as P1, and P2 (depending on the size). Vera bits and screwdrivers are marked the same way (P, Phillips). Both those brands fit wonderfully into JIS screws on Shimano and Yamaha. Unior P screwdrivers, on the other hand, don’t fit nearly as well – the same goes for most other brands and models I’ve tried. The Phillips screw drive (specified as an ANSI Type I Cross Recess [9] and type H in ISO documentation) was created by John P. Thompson, who, after failing to interest manufacturers, sold his design to businessman Henry F. Phillips. [10] [11] Phillips is credited with forming a company ( Phillips Screw Company), improving the design, and promoting the adoption of his product. [10] The original 1932 patent [12] expired in 1966, but the Phillips Screw Company continued to develop improved designs. [10] We've compiled a comprehensive list below of every Phillips (PH) type head screwdriver in our entire range including all sizing details.

The triple-square, also known as XZN, is a type of screw drive with 12 equally spaced protrusions, each ending in a 90° internal angle. The name derives from overlaying three equal squares to form such a pattern with 12 right-angled protrusions (a 12-pointed star). In other words, three Robertson squares are superimposed at a successive 30° rotation. The design is similar to that of the double-square—in both cases, the idea being that it resembles a square (Robertson) but can be engaged at more frequent angles by the driver bit. These screws can be driven with standard Robertson bits. followed by a size-code: #0000, #000, #00, #0 (very small, jeweler-sized ones), #1, #2, #3, and #4 (super large, for heavy machinery).I use this one – it’s my favourite cross-tip screwdriver; both the handle and the tip are awesome 🙂 Improvements in or relating to screw threaded fasteners and drivers for use therewith". Google Patents. 1962-05-04. Archived from the original on 2020-01-26 . Retrieved 2017-10-13. Many people claim that the easy cam-out was designed on purpose to prevent over-tightening. I couldn’t find any evidence to support that – only evidence supporting the self-centring easy slide-in function could be found. A correctly sized JIS driver will engage at full depth into a Phillips or Pozidriv head screw slightly loosely, but without damage. JIS heads are often identified by a single dot or an "X" to one side of the cross slot. [30] The goal of this article (and my research for it) was to help myself find a screwdriver that fits well and doesn’t cam-out. In other words: how can I tell, before trying (and buying), if a screwdriver will work properly with a bicycle, motorcycle and other cross-head screws?