looking for a bolt

[leo in wv]

still looking, so far the best i can find is a 3/8-16x9 stainless hex bolt at boltdepot.com. ($3.86)
they don't have a flange bolt in a 3/8x9in grade 8 or 10 more than 3 inches long.

https://www.boltdepot.com/Product-De...x?product=7211

i may be paying 32$ for a roketa bolt after all...

[JerryHawk250]

Fastenal have them. https://www.fastenal.com/products?r=...goryl1:"600000
Edit. Never mind, I see your looking for a flange bolt. But is available with hex head

[Megadan]

Personally, I wouldn't worry too much about the flange head on the bolt itself. Washer and a lock washer behind the head of the bolt, and the same thing on the nut side would work just as well. Toss on some loctite to the nut, and it wouldn't budge. Functionally it would be just as good. Visually, maybe not as pretty, but I never bothered with pretty.

The one I linked is also grade 10.9, which is exactly what you want. It's only 16mm longer than the original bolt. remove 4 mm of that length for the 2 washers and 2 lock washers, and that only makes it 12mm, or just slightly less than half an inch longer. If the added length bothers you, then with a cutting wheel and/or a grinder, you can remove any extra length you do not need.

Beyond that, then yes you are looking at paying $32 for a bolt. Seems ridiculous to most, but not to me. That is considered a specialty fastener. It is not a standard size, and likely specifically made in batches for Roketa. If you think that is ridiculous, we have a specialty screw at my work that has M4 threads that are 8mm long with a specific head size that acts as a pin with a flat head slot that costs us to the tune of $275 ea. at my work. I about choked on my lunch when I saw the price per unit on it.

[Andizzle]

Would this work? http://www.homedepot.com/p/Crown-Bol...-203538239-_-N
Home Depot is where I bought nuts for my exhaust flange. They’re (5/16”-20) or more commonly known as (M8 - 1.25) if I remember correctly.