John R Fortiner wrote: > > Dear List: > When drilling a hole in a cast iron plate in order to install a > new plate pin that measures 0.157" should I use a slightly undersized bit > like 5/32 which is 0.1562 or should I drill a hole that is 0.157" with a > #22 drill bit? John, You would want to have something of an interference fit but how much interference I couldn't say. There are certain anomolies to consider such as the fact that your 5/32" drill is probably smaller than 0.1562" or the new hitch pin may not be round. I would experiment by drilling with the 5/32" bit first, then graduating to the larger number bits until the desired fit is achieved. Tom -- Thomas A. Cole RPT Santa Cruz, CA
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