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post #1 of 11 (permalink) Old 11-05-2010, 06:33 AM - Thread Starter
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Hello.As the tittle says what taps do I need to make pc screw holes??I bought a new tap and die set and nothing fits


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post #2 of 11 (permalink) Old 11-05-2010, 06:38 AM
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Which holes lol. Also they are probably metric.

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post #3 of 11 (permalink) Old 11-05-2010, 06:42 AM
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The most common screw size for a PC is 6-32 which normally uses a pilot hole of .106" (.120" for roll taps). Is that what you're using?

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post #4 of 11 (permalink) Old 11-05-2010, 08:31 AM - Thread Starter
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Originally Posted by LoneWolf57 View Post
The most common screw size for a PC is 6-32 which normally uses a pilot hole of .106" (.120" for roll taps). Is that what you're using?
I don't know anything about taps mate.The set I got had from M3 to M10 i think .I am asking what the tap for 6-32 and M3 is?For the m3 screw( cd rom)I use M3 tap??


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post #5 of 11 (permalink) Old 11-05-2010, 08:45 AM
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I don't know anything about taps mate.The set I got had from M3 to M10 i think .I am asking what the tap for 6-32 and M3 is?For the m3 screw( cd rom)I use M3 tap??
Yes, for a 6-32 thread use a 6-32 tap, for M3 use an M3 tap

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post #6 of 11 (permalink) Old 11-05-2010, 08:48 AM
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I missed the 2nd part. Most optical drives seem to use M3 screws, so in that case you would use an M3 tap. Just be sure to have the correct size pilot hole so the threads will form properly. For an M3 use 2.50mm

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post #7 of 11 (permalink) Old 11-05-2010, 01:49 PM - Thread Starter
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So when I get to the store,i'll ask for a 6-32 tap?


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post #8 of 11 (permalink) Old 11-05-2010, 02:01 PM
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Yes. They may ask you what H number you want (how much oversize). H2 is probably best and most common, but anything up to H4 will work fine. Even H6 in a pinch will probably get you by.

So just to be clear: ask for a 6-32 H2 tap - they'll know what you're talking about.

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post #9 of 11 (permalink) Old 11-05-2010, 03:46 PM - Thread Starter
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Originally Posted by LoneWolf57 View Post
Yes. They may ask you what H number you want (how much oversize). H2 is probably best and most common, but anything up to H4 will work fine. Even H6 in a pinch will probably get you by.

So just to be clear: ask for a 6-32 H2 tap - they'll know what you're talking about.
Ok mate one last thing; what is H2?Has to do with the treads/inch?


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post #10 of 11 (permalink) Old 11-05-2010, 05:53 PM
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It doesn't. Don't get hung-up on it but you may be asked, which is why I mentioned it. All cutting tools wear, so when you order taps you generally specify far "oversize" you want to go (how sloppy the screw will be). H2 is fine since tool wear is not an issue for you. H6 will be a little sloppy. It's usually hard to find anything less than H2 as they would wear out almost instantly. We tapped about 100K holes last week - and used several taps as they wore out because we had to use H2 so the the matching screws would mate smoothly.

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