ARP and others have the combo Fibonachu mentions because folks that are stuck with metric threads want to use their SAE tools. An accommodation for USA customers. I don't know who is accommodated with the combo you have. I hope you did not use a cordless or electric or pneumatic driver in case the whole fastener was metric. A SS bolt will be hard like a tap. Anyway if that was not spelled out by vendor, I would have sent them back. What vendor was this? Part number? Don't know what "jungle store" means.
Last edited by bartamos; 04/15/2025 10:40 PM. Reason: relocated "extra strange thoughts" paragraph.