I think part of your descriptor is lacking. A 1.7x4 is 1.7mm x 4 threads
per mm, if I'm not mistaken. The depth of the screw is nowhere enumerated
in a standard thread sizing.
-----Original Message-----
From: Mark Dapoz [mailto:md@xxxxxxxxxxxx]
Sent: Tuesday, September 03, 2002 10:43 AM
To: 'olympus@xxxxxxxxxxxxxxx'
Subject: RE: [OM] cross point screws follow up; JIS cross-point screws
On Tue, 3 Sep 2002, Daniel J. Mitchell wrote:
> On a semi-related topic, what size are the _screws_ in cameras? I spent a
> frustrating half-hour in the local model shop trying to get all their
> different screws to fit, and it seems like none of them are compatible --
in
> the end, I shuffled things around, and everything worked okay.
It depends on which screw, there are lots of different sizes. If you check
the exploded parts diagrams, it'll tell you the exact size. For example,
on the OM-1 the screw under the rewind knob is 1.7x4, the bottom plate
screws
are 2x4 and 2x3. A 1.7x4 means the screws is 1.7mm wide and 4mm deep. The
threads are metric so don't try and put an imperial size screw in its place.
> The weird thing is that the camera that was missing a screw was an old
> Rolleiflex TLR, and the one that donated one was a semi-spare XA3 -- a
long
> way apart in time, and the screws still match up -- but the screws seem
> completely unavailable otherwise..
You can get the screws from many sources. I know Micro-Tools carries them
as well as the Olympus parts department. I would suggest trying Micro-Tools
first since I was shocked at the price of a single screw from Olympus (it
was something like $2 each, regardless of quantity!).
-mark
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