[flybouy]

HD sells the natural gas 3/8" quick disconnect. That's what the builder put on our deck and and I had to buy a hose 23 yrs ago when we bought our ng grill. When we bought our current camper it had the 1/4" qdc on the outdoor stove and a 3/8" on the bumber mounted grill. I recognized the size and ordered a 12' extension hose so we could use a larger grill on the table. I assume they did that for a higher flow rate. The ng hoses that HD and others sell are typically larger and less flexible than ones you get from Amazon or online. The OP is looking for a fitting so shouldn't have a problem.

Now days HD and Lowes list if they have it in the the store, how many are in stock, and the bin number. If that "in stock" number is below 4 or 5 I'd order it for pickup to to make sure they didn’t dissappear (stolen) since their last inventory.