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Re: Sheet Metal Screw Properties

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Tension and shear values for sheet metal screws to various thickness of sheet metal products are provided and listed in the Steel Stud Manufacturers Association product technical information.  (  It is also the former ICBO ER-4943P.  I think what Larry was asking was for the grade of steel for the screws since they will be loaded in bending.

On Mon, Jul 25, 2011 at 5:11 PM, Conrad Harrison <sch.tectonic(--nospam--at)> wrote:
The better manufacturers typically publish the tensile and shear strengths of the screws. Here we also have a national standard defining minium properties of the screws. If used in sheet metal or coldformed steel then we check the actual resistance using the coldformed steel structures code (AS4600) for you probably the AISI specification. This is to account for pull-out, tilt over and bearing, which generally controls rather than the strength of the screw.

Conrad Harrison
B.Tech (mfg & mech), MIIE, gradTIEAust
South Australia

David Topete, SE