have just checked my bolts, they are M6 with a 1mm thread diameter pitch....length from the shoulder is 25mm. You could use any bolt with these dimensions.Hope this helps
I got some M6 bolts - 20mm and 25mm. The 20mm will go in the front 2 holes and the rear 2 holes, but not the 2 in the middle? The bolts go in but stick out. I could continue to screw them in but I'm not certain they will go any further?
Any help/advise gratefully appreciated!
Thanks in advance