no they don't have to be whitworth...i thought my local hardware store would have em but no luck anywhere.
Any CAT tractor store will have all the grade 8 hardware that you could ever want. They carry the good stuff, not the overseas fakes. pigpen
PA? But your profile says you're south of heaven...? That would put you in North Texas, since everyone KNOWS heaven is in Oklahoma!
I do not know of a place on-line, am sure there is. For a walk-through-the-door-and-pick-it-up place, check out Caterpillar Trucks. They only use grade 8 bolts and have an good selection. Pigpen types faster than me but Cat is a good place to find odd sized stuff. I have picked up high temp. o-rings also from them.
We get lots of stuff from Mc-master carr. at www.mcmaster.com. They have a great selection and everything always seems to be in stock and ready to ship that same day. They have grade 5 and 8 and metrics too. If you ever need Whitworth taps and dies they can special order them, but it takes just a few days. If you ever need whitworth bolts I've got a source for them too.
I live in a town of less than 5,000, and i can think of at least 10 places that have gread 8 bolts of allmost any size and thread design here. NAPA, Runnings Farm Store, John Deere, ACE Hardware, Menards, Home Depot, Our Own Hardware, Cycle & Snowmobile Dealers, Tractor Supply, Northern States Supply, Car Quest, etc, ect. Call arround, i can't imagine that my little town would have anymore then then where you are at. Grade 8 fasteners are NOT rare. Good Luck.
push comes to shove, try Fastenal. They sell all kinds of hardware and my local store is like a McMaster-Carr or Sears, open to the public & walk-in. They have 2 stores that seem to be close to Wayne, one in King of Prussia & the other in Folcroft. www.fastenal.com i would talk to them about the price though because their web site lists them by bulk (price per 100)
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