Box of Utility Pole Washers (the big square ones)

From my grandma's and late-grandpa's basement. My great-grandpa had worked for the old electric company, Narragansett Electric, to whom this box was addressed to, and had grabbed a bunch of these washers to use with the anchor bolts to use in the foundation of the garage when it was built. I don't think the washers are the original content to this box though, since I'm not sure if Westinghouse sold pole hardware. There's no real indication as to what was in the box but it definitely wasn't lamps or a ballast.