http://www.shoptools.com has a good tap drill chart in a big type size that
prints out nicely.
My suggestion on the bolt types is to find a local source that sells good
grade fives "by the pound". They're so cheap that you can afford to lay in
a stock of 1/4", 5/16", and 3/8" in both threads and several lengths . . .
They'll cover most household, lawnmower and MG applications and save you a
ton of time in "parts chasing". Throw away any grade twos you find,
they're no good for anything. For critical internal engine bolts, don't
substitute . . get the real deal from a proper MG parts supplier.
Cheers,
Tony
>I need to further my education.
>
>I am in the process of removing bits and pieces form my '62 MGA. As I
>replace these items i would like to do so with new hardware. Can anyone
>tell me how to tell whether a British bolt of that era is of mild or
>hardened steel? There are some marks on the head of the bolts but I have
>not been able to find out what they mean.
>
>I bought my first tap and die set today. Is there a good tutorial on the
>web on how to use such things? What are the drill sizes one should use
>prior to tapping a hole? In the absence of a web site can anyone send me
>some tips on how to use these instruments?
>
>Thanks.
>
>Preston
>
>|-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-==-=--
>| Our 62 MGA 1600 MK II and 80 MGB LE are waiting for warm weather
>| Betti Ann and Preston Smith in the Head of St Margaret's Bay, Nova
Scotia, Canada.
>| email: prsmith@navnet.net
>
>
>
>
|