"The delivery was sooner than I expected. The handle fitted without any difficulty. I had to use a drift to press an M5 washer down the counterbore because it was a tight fit; the seller might want to consider pre-installing a washer. I don't know what the screw thread is: it doesn't seem to be quite ISO M5, perhaps it is #10 UNF, but why Prestige should have used an American standard is a mystery, or possibly 3/16" BSF with a different thread angle, which I should have thought was obsolescent in the 1980s. It was easy to reuse the screw but recovering the washer would require splitting the old handle. 3/16" is 4.76mm and #10 UNF is dia 4.82mm so a current standard 5mm washer is fine, but its 10mm OD is a tight fit in the counterbore."
Replacement Handle For Vintage Prestige Lifetime Copper Bottom Frying Pan - Handmade - Handle Only