Is it common to obtain 6mm x 6 mm keys or 6 mm x 8 mm keys?
An internet pages suggests it should be 6 x 6 but a shaft minus the key seems to suggest 6 x 8 would fit better. The 8 mm being the height of the key into the shaft and gear the 6 mm being the width.
Just wondering if a half reasonable engineering store would carry these.
All the keys I have are imperial from a shop shutdown and although I could machine one down thats sure messy.
Cheers
Adrian