Tri-Wing: Difference between revisions
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* [[Fujifilm]] used them in some of their digital cameras. |
* [[Fujifilm]] used them in some of their digital cameras. |
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* [[Sony]] uses them in one of the panels on the bottom of the laptop model VGNS380P. |
* [[Sony]] uses them in one of the panels on the bottom of the laptop model VGNS380P. |
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* [[Apple Inc.]] uses them on their older wireless keyboards. |
* [[Apple Inc.]] uses them on their older wireless keyboards and for securing the battery to the case in the unibody MacBook Pro. |
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* [[Telecom New Zealand]] uses them on household external junction boxes. |
* [[Telecom New Zealand]] uses them on household external junction boxes. |
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* [[Microdrive]]s (Type II CompactFlash Cards) often use them. |
* [[Microdrive]]s (Type II CompactFlash Cards) often use them. |
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Revision as of 22:57, 14 February 2009
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The Tri-Wing is a type of screw and screw head. It is sometimes called a triangular slotted screw. It is used as a tamper-resistant screw on various products, typically electronics.
Appearance
Tri-Wing, as the name suggests, is a screw with three "wings" and a small triangular hole in the center. A variation is a kind in which the three "wings" are joined in the center (with no triangular hole). A somewhat similar-looking design in which three short radial slots are not joined in the center is called a Tri-groove screw head.
Tamper-resistant
The Tri-Wing is a tamper-resistant screw due to the difficulty in finding Tri-Wing screwdrivers in hardware stores, although they can be legally bought online.
Examples of applications
Discouraging home repair or modifications
- Kyocera uses Tri-Wing screws on their phones.
- Nintendo uses Tri-Wing screws in its Game Boy, DS, DS Lite, GameCube, and Wii products.
- Sanyo uses them in its cell phones.
- Nokia formerly used them in some older phones and chargers.
- Fujifilm used them in some of their digital cameras.
- Sony uses them in one of the panels on the bottom of the laptop model VGNS380P.
- Apple Inc. uses them on their older wireless keyboards and for securing the battery to the case in the unibody MacBook Pro.
- Telecom New Zealand uses them on household external junction boxes.
- Microdrives (Type II CompactFlash Cards) often use them.
Discouraging vandalism or theft
- They have been used on light fixtures in common areas of apartment buildings, schools, subways, etc., to prevent the theft of lightbulbs, fluorescent tubes, CFLs, etc.