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  1. 14-02-2015 #4
    IanParkin's Avatar
    Lives in Sheffield UK, United Kingdom.
    IanParkin
    Last Activity: 02-11-2019 Has been a member for 9-10 years. Has a total post count of 73. Received thanks 4 times, giving thanks to others 1 times.
    Actually thinking about the 8-4 it probably means 8tpi but as its 2 start it is in effect 4 tpi
    it means 8tpi (threads ) but a equivilent lead of 4tpi

    it makes for a stronger thread form more teeth engaged in a nut at any one time
    Last edited by IanParkin; 14-02-2015 at 11:00 PM.
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