That doesn't surprise me at all. We've been using the decode charts from old microfiche and EPC versions to track down hardware and supercessions but Dan just learned me on the 1st digit of the 2nd set of digits being the hardness of said hardware. I don't recall having ever seen that tidbit. At this point I've just been ordering 5-10 of each available set of part numbers (93315-15006, 93315-15008, 903315-15010...... ) with plans to spread the drawers from 5-6 drawers to an entire cabinet so they aren't so stuffed. We've been able to use nearly all OE hardware on our bumper fit-kits for example... I'd like to be able to do an ARB bumper install in the future with an all OE JIS hardware option down the road.
Yeah been doing the same thing.
Toyota hardware just has something special to them.
And the numbers provide so much information. But the new localized production 90080-XXXXX numbers blow.