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  • Users: DCowles
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  1. DCowles

    ASME B1.1 Screw Thread Classes

    I'm qualifying a new source (distributor) for our fasteners. When doing a First Article on some #4 and #6 screws, they failed the "Go" gauge for 2A fit. The distributor says I can expect that because of the "zinc" plating. He says they are 2A before plating. My answer was one of total confusion...

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