For future reference, the second number, in this case 3.5 means the screw is
3.5mm in length.
John Hermanson
Camtech Photo Services, Inc.
21 South Lane, Huntington, NY 11743
631-424-2121 | omtech@xxxxxxxxx
www.zuiko.com
Factory Trained OM Service since 1977
__________________________________
----- Original Message -----
From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Friday, September 09, 2005 7:59 AM
Subject: [OM] Re: Auto Bellows question
> Darin Rhein wrote:
>
>> Hello all,
>>
>> I recently bought an Auto Bellows on ebay. It's in excellent condition
>> overall. However, the lens shift knob seems pretty loose, when I change
>> the direction I'm turning it, it takes three full turns of the knob
>> before the lens mount board moves. I'm assuming this isn't the way it's
>> supposed to be? Has anyone here encountered this before? Can someone tell
>> me what size hex wrench does the set screw on the knob?
> ----------------------------
>
> Mark's site <http://olympus.dementia.org/Hardware/PDFs/AutoBellows.pdf>
> has the parts list which shows the screw to be an ACU2x35A. I think
> this means 2mm diameter x .35mm thread pitch. But I have no clue how
> one translates this to screw length or size for the allen wrench.
>
> I tried my two smallest allen wrenches and found one too large and the
> other too small. I was going to measure them so you might home in on
> the size but discovered that my electronic caliper seems to have let its
> electrons escape.
>
> Chuck Norcutt
>
>
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