Bolt Specification Question

Thanks
Tim

UNC is Unified National Coarse. that means you are looking for a common 1/4-20 bolt, nothing unusual. I'd get a grade 8 but a grade 5 will work. Don't let the hardware store sell you a no markings grade 2 bolt.

Charles

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BTW, I tried Google and only came up with a million hits on the University of North Carolina...seems like that happens a lot to me. Just like my post on the Tractor Board about regulations concerning Hay production, I could not find anything and the rest of the fellas had several websites where information was available.

Thanks again..
Tim

"Socket Head Cap Screw" This is the style that has the recessed hexagonal "socket" for an allen wrench.

The 3/16 allen (hex) wrench is standard for a 1/4-20 socket head cap screw. Socket head cap screws (SHCS) are not typically supplied with "Grade designations", but with either a stainless or plain steel the strength will be adequate.

For google (or other search engines) they "rank" what are the most popular search results, so if you search for "UNC" by itself, you will find exactly what you did. However, if you search for "1/4-20 UNC" or "UNC thread", you will get very different results.

Here is a link to the part you are asking about. As others said, any decent hardware store (maybe even wally world) will have this part.

Nathaniel

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