Bemis Toilet Seat Anchor for One-piece Ceramic Toilets (Kohler)

Bemis "Easy Clean & Replace" toilet seats have hinges with snap-on twist-clips that attach to anchoring bolts with specially shaped heads. The product packaging claims that the toilet seat will fit all manufacturer's toilets.

However, it turns out that the included fasteners won't work with Kohler one-piece ceramic toilets because of its unique design which prevent the use of the specially shaped anchoring bolts. (It's possible that this may also work with Toto toilets with a similar issue;