Having an issue sizing my screw I have a old bed frame bolt that fits the shaft fine 8000 series engine very small bolt shaft. Is this so called bed frame screw with steel washers and two lock washers OK? It seems fragile I can thread it in but it gets half way and stops as there is some **** in the threads (rust) old age. I checked the frame screw with 3 other similar screws and it damages the threads on the bolt only in the middle where the rust is but it threads easy. Also there is only a (piece of crank shaft key in the clutch.) Factory. Is this little hint enough to hold?