Many thanks for your reply I have had no luck in identifying the MTD model number all I know is its probably a 400 series and I got that from a French companyMost likely 7/16x20 with a 5/8 hex. MTD would supply the original bolt not briggs. So the MTD model numbe would give more information as far as length used.
Oh was that what you neededMany thanks for your reply I have spent hours trying to get that information now I just need to find a bolt supplier, all of the parts suppliers ask for the part number.
Regards Keith