Author Topic: MS440 Cylinder Screws  (Read 290 times)

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Offline Al Smith

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Re: MS440 Cylinder Screws
« on: March 29, 2013, 08:41:43 pm »
A portion of how I make my living is work involved in the tightening of screwed fasteners used on automotive engines .Every fastener from the factory assembley is robotically/electronically  tightened ,none by hand .

I had a mechanical engineer explain  how a screw works which is exactly like a spring under tension .It can stretch or give a very slight amount but if properly torqued it will snap back .More failures are experianced with under torqued fasteners than slightly overtorqued .

The auto industry uses a formula of initial torque than a certain degree of rotation afterwards .Of course this varies as to the bolt size .

For my little life actually the cylinder bolts on a saw engine are the only ones I get anal about and I use a torque wrench on every one of them .

 

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