Call me anal, but I want all 20 of my braze-on screws to match. Does anyone know of a site that sells the taper-headed ones in the first pic? I'd settle for ones like in the second pic, but would then replace all 20.

They're 17mm long, M5 size, and stainless.
(I'd also like a supply of shorter ones, if possible.)

I found them in titanium, but hesitate to pay $2 apiece for them!