American made hardware...found it!

[TDW]

Well, I can't edit the post now. I have the wrong spelling in the link. here is the correct one: www.kimballmidwest.com

[rubbinisracing]

There are 3 manufacturers of SAE graded cap screws in the states and 1 in Canada. There headmarks are as follows.

Infasco (Canada) - a solid triangle, some cap screws will have a outlined triangle and those products are asian imports

Nucor (US) - a lower case "n"

Lake Erie Screw - "LE" in caps, they also private label for Caterpillar, Lawson, Tifco, Bowman, Porteous, etc.

Highland Thread a Division on MNP - headmark is an outlined "H" that looks like a dumbell.

There are some other cap screws which are made in the USA which are stronger than Grade 8. Those include L-9, Foremost Threaded Products and others.

Avoid RBW marked cap screws...this use to be an American made product many years ago but since the late 70's has been entirely imported from overseas.

Don't forget to ask for Domestic made nuts and flat washers. These are even harder to find.

[TDW]

Good info howard. The bolts from KM are the "Nucor" brand. The nuts and washers come in a bag of 100. They say only "product of USA, so I don't know the manufacture of them.

[ANDY M]

They are based here in Columbus, and I'm friends with one of their reps. Let me know if I can help.