I have used these pins for via's. I found them to big (although if
memory serves me correctly, my supplier were out of stock of smaller
ones). But they work. I know the name sounds like Harris or Harvard
(been a while). Try RS Electronics for it.
My problem with through hole plating (the lack there of) was with IC
pins, where you have a track on the top layer and need to solder on the
bottom. If I can find a solution for it (without changing my layout)
I'll happily start doing my own prototypes again.

Quentin
qsc@iptech.co.za
www.iptech.co.za

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