Thanks for all the replies, The roll hoops were actually a good fit and the bols lined up perfectly, I have found a comparison chart for metric and imperial markings, it would seem the bolts i have with three radial lines are equivalent to a 8.8 bolt. so if i print this off and take it with me to SVA would this satisfy the tester?
Bolt Grade Markings and Strength Chart
Thanks again
Russ