He may not have been a white supremacist per se but he did contribute a lot of his quotes to The Turner Diaries as well as for retaliating against the federal government in their handling of Ruby Ridge and Waco.
I would say he was a white supremacist by guilt of association even though he wasn't an ardent supporter of it's idealogies.
As for the survivalist--are you sure your not confusing Tim McVeigh with Ted Kaczinkzky?
Now he was a survivalist!