Means for uniting a screw with a driver". US Patent and Trademark Office. US Government. Archived from the original on 5 March 2016 . Retrieved 28 February 2016. Recessed head fastener and driver combination". Google Patents. 2015-12-11. Archived from the original on 2020-01-26 . Retrieved 2017-10-13.

Coin-slot drives are so-called because of the curved bottom of the recess, which facilitates driving them with a suitable coin. They are often used on items where the user is not likely to have a screwdriver when needed, such as recessed screws that attach cameras to tripod adapters, and battery compartments in some equipment such as children's toys. [ citation needed] Hi-Torque [ edit ]National Bureau of Standards. (1942) National Bureau of Standards Handbook H28, Screw Thread Standards for Federal Services. pp. 177, 179, 182, 184 When a Phillips is not a Phillips!". Instructables.com. Archived from the original on 2011-08-27 . Retrieved 2011-08-01. Frauenfelder, Mark (2011-01-20). "Apple's diabolical plan to screw your iPhone". Boing Boing. Archived from the original on 2011-01-23 . Retrieved 2011-01-23. Pavlis, Egon "arcticpenguin" [pseudonym]. "When a Phillips is not a Phillips Plus So Much More!". Instructables: share what you make. Instructables. Archived from the original on 2012-02-09 . Retrieved 2012-03-11.

Phillips Fastener". Phillips Fastener. Archived from the original on 2020-10-23 . Retrieved 2020-09-05. a b c d e Dougan, Lee. "Aerospace Drive System Finding New Applications". www.phillips-screw.com. Phillips Screw Company . Retrieved 21 September 2022. Tri-point Y000 Screwdriver (for Apple Watch and iPhone 7)". iFixit. Archived from the original on 16 October 2021 . Retrieved 28 February 2017.Tri-point-3 [ edit ] Oral-B rechargeable toothbrush, showing the TP3 headed screw used to hold the case together. When the rechargeable battery is no longer serviceable, the toothbrush case may be opened by removing this screw, allowing access to the battery and motor units for recycling. The wall adapter has a molded screwdriver on its case to facilitate this. The Ultra-Lok, and Ultra-Lok II are some of these designs that use custom keyed drivers, which tend to be confined to industrial and institutional uses that are unavailable to the average layperson. Key-Rex screws are another design, and are used in such things as ballot boxes and bank vaults. [41] The 12-pointed internal star shape superficially resembles the "double hex" fastener head, but differs subtly in that the points are shaped to an internal angle of 90° (derived from a square), rather than the 120° internal angle of a hexagon. In practice, drivers for the fasteners may be interchangeable, but should be examined carefully for proper fit before application of force. A hex key should not be used where a key of square cross-section is the correct fit. The Phillips Screw Company owns the licensed product that is the Mortorq spiral drive system. The Phillips Screw Company must inspect and approve any punches, bits, and screws before they are cleared for production. Along with this "all licensees must submit samples regularly to ensure that the strict quality standards are maintained". [38] Solid modeling is used for the design of the punches, bits, and screws. Files are sent over to manufacturers containing these models so that there is no miscommunication and all the parts are the same across the board. MTI Catalog" (PDF). moodytools.com. Archived (PDF) from the original on 2014-01-09 . Retrieved 2014-01-10.