Local stores that sell bolt snaps?

Will be heading out on Tuesday for a diving trip and need to get some bolt snaps before then. I could order from Amazon and it should arrive in time, but I also see local home improvement stores like home depot and lowes selling them, but I'm not sure of the quality.

From reading other posts, I should get marine grade 316? When I searched marine grade bolt snaps on home depot's website, it shows https://www.homedepot.com/s/marine%20grade%20bolt%20snap?NCNI-5 but these bolt snaps don't seem to be marine grade when i read their specs.

Does anyone know of where I can buy a marine grade one? I might prefer buying locally so I can see it before buying it.