The TP35 holes are sized for 0.131" x 2 1/2" nails or 0.131" x 1 1/2" nails. Please note these plates are not load rated and it would be up to the Designer/Engineer of Record to determine the suitability of the connector for the specific application. Thank you!
It is not magnetic. Yes a magnet will stick to it.
Yes, they can be bought in bulk. When buying 100 of this item, the price goes down from .98 each to .93 each.
Gary, The TP35 measures 3 1/8" x 5". Please see the following link for all TP models and sizes: http://www.strongtie.com/products/connectors/tp-tpa.asp#. Thank you!