Triple-square fasteners are referred to as "spline" in the UK. This is potentially confusing if looking for the more unusual 12-spline flange type. While they are distinguished under close inspection by the angle at the tip of each of the 12 points (with a 90° angle on the XZN, instead of 60°) the general similarity and ability to insert the wrong tool can cause damage to the head. 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.

Magnetic Screwdriver: It is a standard screwdriver with a practical feature: The screws are held in place by a magnetized tip, making it simpler to install or remove the screws. About Bristol Wrench Spline Drive Bits". 2016-10-21. Archived from the original on 2016-10-21 . Retrieved 2019-11-23. ISO 4754-1983(E) Cross recesses for screws" (PDF). Archived from the original (PDF) on April 30, 2023 . Retrieved October 1, 2023. The Recex drive system claims it offers the combined non-slip convenience of a Robertson drive during production assembly and Phillips for after market serviceability. The Phillips Screw Company offers both Phillips and Pozidriv combo heads with Robertson. [ citation needed] Slotted/Torx [ edit ] The blade is the lower part of the shank. It is also known as a tip. This part is hardened and tempered.

The 12-spline flange screw drive has twelve splines in the fastener and tool. It consists of 12 equally spaced protrusions, each with a 60° angle. It is achieved overlaying 4 equilateral triangles, each one rotated 30° over the previous one. The spline drive was part of the obsolete, U.S-designed Optimum Metric Fastener System and was defined by ASTM B18.2.7.1M, which was withdrawn in 2011, [81] making the spline drive obsolescent. The JIS B 1012 [29] was commonly found in Japanese made equipment, such as cameras and motorbikes. Superficially it looks like a Phillips screw with narrower and more vertical slots, to give less tendency to cam out. The bottom of the recess is flat, and the point of the driver has to be blunt. A Phillips screwdriver has the same 26.5 degree cone angle but because of the tapered slots will not seat fully, and will damage the screw if forced. Slot screw drives have a single horizontal indentation (the slot) in the fastener head and is driven by a "common blade" or flat-bladed screwdriver. This form was the first type of screw drive to be developed, and for centuries, it was the simplest and cheapest to make because it can just be sawed or filed. Additionally, it is unique because the slot head is straightforward to manufacture, and because it can be driven by a simple handtool. The slotted screw is commonly found in existing products and installations, along with use in simple carpentry work and in applications where minimal torque is needed. Slot screws are also used in the restoration of antique furniture, vehicles, and equipment. Tri-point Y000 Screwdriver (for Apple Watch and iPhone 7)". iFixit. Archived from the original on 16 October 2021 . Retrieved 28 February 2017.

a b "Tork-Bolts". Loss Prevention Fasteners. Ultra Fasteners Inc. Archived from the original on 2015-09-26 . Retrieved 2015-09-25. Avsafe". www.losspreventionfasteners.com. Archived from the original on 2017-03-01 . Retrieved 2017-02-28. Phillips Fastener". Phillips Fastener. Archived from the original on 2020-10-23 . Retrieved 2020-09-05. Ribe– Your development partner for fastening systems". Ribe Verbindungstechnik. Archived from the original on 2015-10-05 . Retrieved 2015-08-25.Wilder, George. "What are the differences between the two types of drive– Phillips and Posidriv?" (PDF). v8register. Archived (PDF) from the original on 2016-04-09 . Retrieved 2017-09-02.

Apple uses Y-type screws to secure the battery on the 2010 and 2011 MacBook Pro, as well as an extremely small type in the Apple Watch, iPhone 7 and iPhone X. [87] [88] This style of screw is often called a "tri-wing", although that name more properly belongs to a different design (see below).Other combinations are a Phillips and Robertson, a Robertson and a slotted, a Torx and a slotted and a triple-drive screw that can take a slotted, Phillips or a Robertson. Tri-Wing Screwdriver. "Tri-wing screwdriver: Types". Triwingscrewdrivers.com. Archived from the original on 2012-03-23 . Retrieved 2012-03-12.

The Phillips/square screw drive, also known as the Quadrex, Pozisquare screw drive, is a combination of the Phillips and Robertson screw drives. While a standard Phillips or Robertson tool can be used, there is also a dedicated tool for it that increases the surface area between the tool and the fastener so it can handle more torque. [62] Recex [ edit ] 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-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.a b arcticpenguin (2008-12-29). "SupaDriv". Instructables.com. Archived from the original on 2012-03-24 . Retrieved 2012-03-12.