Fastener Identification

I'm cleaning out a box of parts and came across a baggy with 12 of these studs. One end is 1/4-20 and the other is 1/4-28. Any idea what these studs are for?

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These are short 3/8-16 bolts. I had 10 of them. Any idea what they're for? I'm guessing cover for a Dana 60 since they were with other Dana parts. And they stink.

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