Searching for 1/4"x20 t nuts

I use t nuts to mount handles and straps on wooden shields. As mentioned elsewhere, years ago I standardized as much as possible on 1/4" inch nuts and bolts.

Just visited Lowes, They have bulk packs of 5/16" t nuts for an entirely reasonable price, but only sell 1/4" t nuts in 2 packs for $1.08. They used to sell a variety of sizes, but no more.

Found them via the web, and though they are available for quite attractive prices from a variety of sources, shipping generally doubles (or quintuples!!) the price.

Anyone have a source for quarter inch t nuts? Does Home Depot still carry them?