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	Comments on: SCREWED	</title>
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		By: Rein		</title>
		<link>http://davetrott.co.uk/2024/10/screwed/#comment-180683</link>

		<dc:creator><![CDATA[Rein]]></dc:creator>
		<pubDate>Tue, 29 Oct 2024 01:15:46 +0000</pubDate>
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					<description><![CDATA[Hi Dave, 

Love your writing. If this topic amuses you, then I suggest you also look at Robertson screws and drivers (the square holed ones).
These are kind of a funny story in themselves. Initially they were marketed for the same automation friendly assembly as Phillips yet with better grip for the driver bit, but they had some downsides in being a bit weaker so the heads could shear off. Then in some parts of the world, the US for one, they were used as vandal proof screws because the screwdrivers were not available in those markets, apparently for licensing reasons. They were immensely popular in public fixtures like playgrounds and toilets. I worked for a company in Canada, where I believe they were invented, that used these and for the US we had to ship a screwdriver with our products so the customers could service them.

If you want to go further in the weeds, related to both these was the introduction of the slot holed self tapping screws (both Phillips and Robertson) used in slapdash sheet metal assembly. Sometimes referred to as the Chrysler screw for its use during the worst days of Detroit automotive assembly quality. No hangover was going to stop a worker from getting that fender attached!]]></description>
			<content:encoded><![CDATA[<p>Hi Dave, </p>
<p>Love your writing. If this topic amuses you, then I suggest you also look at Robertson screws and drivers (the square holed ones).<br />
These are kind of a funny story in themselves. Initially they were marketed for the same automation friendly assembly as Phillips yet with better grip for the driver bit, but they had some downsides in being a bit weaker so the heads could shear off. Then in some parts of the world, the US for one, they were used as vandal proof screws because the screwdrivers were not available in those markets, apparently for licensing reasons. They were immensely popular in public fixtures like playgrounds and toilets. I worked for a company in Canada, where I believe they were invented, that used these and for the US we had to ship a screwdriver with our products so the customers could service them.</p>
<p>If you want to go further in the weeds, related to both these was the introduction of the slot holed self tapping screws (both Phillips and Robertson) used in slapdash sheet metal assembly. Sometimes referred to as the Chrysler screw for its use during the worst days of Detroit automotive assembly quality. No hangover was going to stop a worker from getting that fender attached!</p>
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