drill size for M3 x 0.5 thread
13-07-2009, 11:55 AM
#1
drill size for M3 x 0.5 thread
anyone got any ideas as to what size drill i need to make the hole big enough to tap the thread in?
it's bigger than 2mm but my next size up is 2.5mm and i dn't want it to be too big
help please
it's bigger than 2mm but my next size up is 2.5mm and i dn't want it to be too big
help please
13-07-2009, 12:04 PM
#2
10K+ Poster!!
13-07-2009, 08:46 PM
#6
20K+ Super Poster.
If it's a soft material I 'd go 2mm to start with, holes always come out slightly nigger than drill size, especially if bit is worn.
Get a copy of ZEUS, this will have all the info you want.
tabetha
Get a copy of ZEUS, this will have all the info you want.
tabetha
13-07-2009, 10:05 PM
#7
it's going into aluminium and the 2mm hole is too small 
thing is though, it's a blind hole so i'm going to have to get a full tap set to get it all the way or else i'll just make the hole 5 or 6mm deeper to take into account the first bit of tame thread
thing is though, it's a blind hole so i'm going to have to get a full tap set to get it all the way or else i'll just make the hole 5 or 6mm deeper to take into account the first bit of tame thread
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