[Steve Phillips]

Hi

I am currently working on a customers 407, so I'll make the assumption that the hinges on an 8 will be the same, on the 7 the A post screws are 5/16 BSF "British standard fine" countersunk,

However BSF are very expensive compared to UNF for example so we have replaced the BSF with UNF on the A post side, all the screws have nuts on the back and are not into captive nuts so it's not a problem,

I haven't got as far as the door side screws yet but would assume they will also be BSF, I can confirm this tomorrow once I'm back at work, and these do screw into captive nuts so really need to be kept as BSF,

You could use M8 screws on the A post side as 5/16" and 8mm are virtually identical in size, but we found the countersunk heads don't sitting well in the hinge, so you would either need stainless screws and machine the heads to suit, or redrill the countersunk in the hinge,

Hope some of that helps

Steve