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    dean1234's Avatar
    dean1234 Posts: 9, Reputation: 1
    New Member
    		  
    #1

    Feb 17, 2010, 07:35 AM
    Green screw
    Is the green grounding screw chemically treated green for better conductivity or simple painted green?
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #2

    Feb 17, 2010, 08:13 AM

    Easy identification. It is a self tapping screw.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #3

    Feb 17, 2010, 08:57 AM
    Now we are getting down to nuts and bolts.

    As Don mentions, it is identifed with a permenent green color to indicate grounding terminal, which is the dedicated color code for grounding by the National Electric Code.

    It is plated with zinc chromate tinted with green pigment.

    http://www.metallicsonline.com/catalog/page127.pdf

    Everything You Need To Know About Zinc Chromate
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