Garth, I am sure the last time I had to look there was a listed minimum thickness for use without the nut. If a pilot hole had to be drilled, it sounds pretty thick.
-----Original Message----- From: Garth W. Warren [mailto:[email protected]] Sent: Tuesday, October 12, 2010 9:11 PM To: [email protected]; [email protected] Subject: Re: A matter of conscience ----- Original Message ----- From: "Brad" <[email protected]> > Sammys in thick enough steel are listed for quite a bit of weight without > the retainer nut I do not remember any Lister or Approved sammy for steel that did not require a retainer nut. Choices other than sammies should be considered if a back nut is impossible to place. Garth retired fitter _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
