I've an old binder bolt where the lug to engage with the frame lug was worn down. But this still had an Allen key head on both sides.
Could be that you've got a mismatched binder bolt? Does it have campy written on both sides?
@Muppetteer started
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I've an old binder bolt where the lug to engage with the frame lug was worn down. But this still had an Allen key head on both sides.
Could be that you've got a mismatched binder bolt? Does it have campy written on both sides?