Door threshold screw source?

[Foureagles]

Doing subfloor replacement at the front door, and the screws in the door threshold are corroded, some broken, and seem fairly special. They're very wide head Phillips countersunk self-tapping metal screws, and I don't recall seeing their like at a bolt house. Does anyone here know where to find appropriate replacements? Thanks.

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[Mixter]

I found some at local Ace Hardware, that has a particularly good selection of Stainless Steel. I have not yet installed, so I cant say how well they worked, but they seem to be a great match to original.... I will likely have to touch up the counter sink a bit to match the bolt, so not sure how that's going to work- these philips heads are massive. I also bought matching nyloc's for the underside.

If they dont work the way I want, I should be able to find something else.

As for Ace's selection.... I happened to be near another one 2 days ago and went in to pick up some washers.... they did not have nearly the selection from my normal store. The employee said they are all independently owned franchises and therefore carry different products.

A great alternative is McMaster Carr online. They literally have everything. BUT sometimes I like to touch and feel.... Ebay also has been a good source of my Stainless Steel hardware.

[Foureagles]

Thanks Mixter. I wouldn't have thought that they'd be common enough for a hardware store. I too prefer to physically compere something like that, and so I'll check. And we do have some pretty good fastener shops in the area.

Appreciate the tips!