Battery T Shaped Screw / Bolt on Terminal

Purchased a new battery from dealer (approx $199) to replace the non-stock and incorrect CCA that came with my X3 (car purchased from a non-BMW dealer). During installation, tightening the terminal screw / bolt,  I ended up overtightening and broke off the 10mm nut. I went to all the retail auto parts stores in my area and no one had the battery terminal bolt. The bolt is T shaped and somehow no one seems to carry and the auto parts staff told me to just go to the BMW dealer. Well no, not about to do that! So searching online I found this was a common issue for individuals with that type of battery terminal, requiring a T-shape bolt. Here is a forum post I found that talks about this and the replacement. I asked my local Volkswagen dealer and they charge $10 nowadays for that part (# 6x0-915-138). Hyperlink to mentioned forum...http://forums.bimmerforums.com/forum/showthread.php?t=1541019

cnn, bimmerforums member. "Battery t-shaped bolt and terminal" Photograph. c2010. From Internet: Bimmerforums - Need a new battery clamp, 10-11-2010. http://forums.bimmerforums.com/forum/showthread.php?t=1541019. (accessed July 27, 2012).