Comments on: Galvanized Nuts Tapped Oversize http://www.portlandbolt.com/faqs/galvanized-nuts-tapped-oversize Portland Bolt's Frequently Asked Questions Wed, 10 Mar 2010 23:30:55 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Erik Waelchli - IBD Connection, Inc http://www.portlandbolt.com/faqs/galvanized-nuts-tapped-oversize/comment-page-1#comment-3003 Erik Waelchli - IBD Connection, Inc Wed, 06 Jan 2010 19:12:09 +0000 http://www.portlandbolt.com/wordpress/galvanized-nuts-tapped-oversize#comment-3003 You write: "A common misconception is that bolts that are going to be hot-dip galvanized are threaded undersize since the galvanizing will increase the size of the threads. This is not correct." In Europe the old DIN standard 267 Part 10, and now the new ISO Standard 10684 calls for optional processes, i.e. oversized nuts or undersized screws before hot-dip galvaizing. Are American Standards such as ASTM A563 only addressing the oversized nuts and do not allow undersizing male threads? You write: “A common misconception is that bolts that are going to be hot-dip galvanized are threaded undersize since the galvanizing will increase the size of the threads. This is not correct.”

In Europe the old DIN standard 267 Part 10, and now the new ISO Standard 10684 calls for optional processes, i.e. oversized nuts or undersized screws before hot-dip galvaizing.

Are American Standards such as ASTM A563 only addressing the oversized nuts and do not allow undersizing male threads?

]]> By: TWY http://www.portlandbolt.com/faqs/galvanized-nuts-tapped-oversize/comment-page-1#comment-2882 TWY Thu, 26 Nov 2009 10:54:32 +0000 http://www.portlandbolt.com/wordpress/galvanized-nuts-tapped-oversize#comment-2882 Is the galvanized bolts, screws and nuts is better than Mild Steel Cadmium bolts, screws and nuts in terms of corrosion resistance ? Your advice is appreciated. Thanks. Is the galvanized bolts, screws and nuts is better than Mild Steel Cadmium bolts, screws and nuts in terms of corrosion resistance ?

Your advice is appreciated.

Thanks.

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