6-32 Screw
The 6-32 is a UTS screw with a major thread diameter of 0.1380 inches (3.5052 millimetres) and a tpi (threads per inch, imperial threads) of 32 tpi, so the threads of the screws are 0.79375 millimetres apart. It is by far the most common screw found inside computer cases and commonly appears in lengths of 0.15 and 0.25 in. Nearly every brand new computer case comes with a bag of these. They are used:
- To secure a power supply to the case
- To secure a hard disk drive to the case
- To hold an expansion card in place by its metal slot cover
- To fasten case components to one another
- Usually, a 6-32 screw holds the main cover on the case.
They are almost always provided with a Phillips drive, accepting a #2 size tip (the larger of the two most common Phillips screwdriver tips). They are less frequently provided with a hex head, even less with a pan head - a low disk with a chamfered outer edge. Because they are used in places where easy removal and replacement may be desirable (such as on the side panels of the PC case), they are frequently available as thumbscrews with larger, knurled heads that can be removed with one's fingers or tools.
Read more about this topic: Computer Case Screws
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