There's these, but I don't know what they are;-
https://www.morrismi...c-2a659-p830178those look like A series bolts. mine is an A+
They are 100% interchangeable.
Out of curiosity, on an A+ engine, would you use the locktab with those ? 2A659 is available from many suppliers - equivalent of 12G2217 ???
The trouble with all the A type Bolts I've seen in recent years is they aren't genuine and goodness knows what grade they are or where they come from.