Re: C64/VIC shell screw sizes

From: Justin <>
Date: Thu, 19 Jan 2012 17:48:39 -0500
Message-Id: <>
On Jan 19, 2012, at 13:25 , Gerrit Heitsch wrote:

> On 01/19/2012 02:27 AM, Justin wrote:
>> Be aware that thread pitches are different for metric and US screws, and that due to manufacturing variability and tolerances, screws that technically have the same thread pitch may still fit slightly tight or loose.  The 64 probably uses screws made to US specs rather than metric.
> They probably designed it US screws since that part was done in the USA. But when it came to making it, I'd say the plants used whatever was available locally and fit. Remember, the C64 was made all over the world including Germany, Hong Kong and the UK. On first insertion, the screws cut their thread into the plastic of the case so there is no need to get too specific.
> Gerrit

Sure, but since he is putting in replacements (presumably), having the same thread pitch and diameter will preclude tapping new threads into the now rather ancient plastic.  It probably doesn't matter too much, since Commodore seems to have used fairly decent plastics that mostly haven't gotten brittle with age, but since it costs almost nothing to get it exactly right, why not get it exactly right.
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Received on 2012-01-19 23:00:45

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