Isaac Marino Bavaresco wrote:
>  Em 5/8/2010 15:46, V G escreveu:
>  =20
>> Hi all,
>>
>> I'm going to be using hex standoffs to stack PCBs on top of each
>> other. These hex standoffs use M3 screws which I have found to use
>> screws 3 mm in diameter. For drilling holes appropriate for these
>> screws, I have chosen to use tungsten carbide drill bits. Should I
>> select a drill bit exactly 3 mm in diameter (such as this one:
>> http://cgi.ebay.ca/Tungsten-Carbide-Multipurpose-Drill-Bit-3mm-/16043985=
3750?cmd=3DViewItem&pt=3DUK_Home_Garden_PowerTools_SM&hash=3Ditem255af5e2b6=
#ht_673wt_913)
>> or should I select something slightly larger? The question is: will
>> the screw slide through if I use a drill bit exactly 3 mm in diameter?
>>    =20
>
>  =20

Try this site:

http://www.csgnetwork.com/screwmetmachtable.html

It is an excellent table of drill sizing for various mm size screws

Vic Fraenckel
KC2GUI
windswaytoo ATSIGN gmail DOT com

--=20
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