[T3] [T-3] Screw sizing

[Mike Fisher]

I remember having to deal with Whetworth wrenches, when I had my AC
Ace-Bristol!

On Mon, Dec 13, 2010 at 3:34 PM, Dave Hall <dave at hallvw.clara.co.uk> wrote:
> Well, as I understand it, #4 and #6 are the order of the drills in a full
> set starting from 1/16" and going up in 1/64", so #4 is 7/64"  and #6 is
> 9/64".  Multiply those by the conversion factor of 25.4mm per inch gives
> 2.78mm and 3.57mm.  The first is close, but 3.9mm is closer to #7, which
> would be 5/32" or 3.97mm.  I don't know if you can get #7 screws though.
>
> I hope that helps, and if it's rubbish, I'm sorry.   It took me half a
> lifetime to realise that screw numbers related to the order of drills in the
> normal set, then they went and adopted the metric system for engineering.
> It's the clearance hole for the screw, as I recall.
>
> I'm about to be involved with a UK school building a Rans S6 aeroplane kit,
> with Imperial sized everything!  So having taught kids to measure everything
> in metric, we will now have to help them get used to our old ways, as well
> as get used to them again ourselves.
>
> Dave.
> UK VW Type 3&4 Club
> -------------
>
> -----Original Message-----
> From: type3-vwtype3.org-bounces at lists.vwtype3.org
> [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of
> Bobsnotch at aol.com
> Sent: 13 December 2010 03:13
> To: type3 at vwtype3.org
> Subject: [T3] [T-3] Screw sizing
>
> I asked this over on the Samba, but haven't had any replies, so I thought
> I'd ask here.
> Does anybody have a conversion chart for metric sheet metal screws to the
> American sizes? What I'm looking for is a conversion from 2.9 and 3.9 into
> the  US standard. Would these be #4 and #6 equivalents? I'm only asking,
> because I  want to get some replacement screws for the upper trim and other
> various parts  on the t-34, but would like to get them in stainless steel.
> Nobody offers them  in SS in metric sizes around here. Thanks for any help
> you can give me.
>
>
> Bob 65 Notch  S with sunroof and IRS (Krusty)
> 71 Notch (Krunchy)
> 64 T-34 Ghia  (Wolfie)
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