Automotive Fastener Transition - NCRS Discussion Boards

Automotive Fastener Transition

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  • Patrick H.
    Beyond Control Poster
    • December 1, 1989
    • 11608
    #16
    Re: Automotive Fastener Transition

    Chris,

    If you look close I'd bet it says 8.8 and not 88.
    8.8 is the metric "equivalent" of Grade 5 SAE strength.

    Patrick
    Vice-Chairman (West), Michigan Chapter NCRS
    71 "deer modified" coupe
    72 5-Star Bowtie / Duntov coupe. https://www.flickr.com/photos/124695...57649252735124
    2008 coupe
    Available stickers: Engine suffix code, exhaust tips & mufflers, shocks, AIR diverter valve broadcast code.
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      • Patrick H.
        Beyond Control Poster
        • December 1, 1989
        • 11608
        #17
        Re: Automotive Fastener Transition

        Chris,

        If you look close I'd bet it says 8.8 and not 88.
        8.8 is the metric "equivalent" of Grade 5 SAE strength.

        Patrick
        Vice-Chairman (West), Michigan Chapter NCRS
        71 "deer modified" coupe
        72 5-Star Bowtie / Duntov coupe. https://www.flickr.com/photos/124695...57649252735124
        2008 coupe
        Available stickers: Engine suffix code, exhaust tips & mufflers, shocks, AIR diverter valve broadcast code.
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          • Joe L.
            Beyond Control Poster
            • February 1, 1988
            • 43193
            #18
            Re: Automotive Fastener Transition

            chris-----

            Are you sure the tappings in the waterpump casting are 1/4-20? 6mm is real close to 1/4. I'd be very surprised to find a metric head size bolt with inch size threads, ESPECIALLY a bolt that has a metric material grade rating (i.e. 8.8).
            In Appreciation of John Hinckley
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              • Joe L.
                Beyond Control Poster
                • February 1, 1988
                • 43193
                #19
                Re: Automotive Fastener Transition

                chris-----

                Are you sure the tappings in the waterpump casting are 1/4-20? 6mm is real close to 1/4. I'd be very surprised to find a metric head size bolt with inch size threads, ESPECIALLY a bolt that has a metric material grade rating (i.e. 8.8).
                In Appreciation of John Hinckley
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