antonyg
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| posted on 7/2/06 at 08:52 PM |
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drill size for 7/16 unf tap
can someone confirm that i have the right size drill bit for a 7/16 unf tap i found this link and it says i need a 9.9mm drill bit, is this correct
http://www.tapdie.com/html/tapping_drills_for_taps.html
Thanks Antony
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flak monkey
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| posted on 7/2/06 at 08:53 PM |
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Yep. 9.90mm (0.3898" ) according the the wonderful Zeus book. The BSI alternative drill is 9.80mm, just depends what material you are
tapping...
David 
[Edited on 7/2/06 by flak monkey]
Sera
http://www.motosera.com
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antonyg
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| posted on 7/2/06 at 09:35 PM |
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making some seatbelt mounts to weld into my roll bar so was going to use ordinary mild steel solid bar
drill a hole down the middle and tap out
9.9mm it is then
thanks for that
Antony
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Danozeman
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| posted on 8/2/06 at 06:26 AM |
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I used a 3/8 drill for mine. Worked a treat.
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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