Where can one get the battery terminal bolt and nut for a 1998 XK8? It is the bolt with a small head, .75" x .75". I have been to 4 auto parts stores in Santa Rosa.
O'Reilly = Nope Grand Auto = Nope My Jaguar mechanic = "Grind down the head on one that doesn't fit." Gee thanks.

Go to a hardware store. Much greater selection of nuts and bolts than any big-box auto parts store....

Purchased a replacement nut & bolt for the positive or negative terminal that fits on posts at the battery display area at local O'Reilly's store. Came in a Blister Pack of 4 items with 2 nuts and 2 bolts. !0mm heads.