Date: 12/31/1969 Views: 3144
Date: 09/16/2004 Views: 4614
Date: 12/03/2004 Views: 3212
Date: 08/23/2023 Views: 217790
External thread dimension of the tank opening area is a nominal 2.55 in or 64.77 mm. I say "nominal" as the dimension varies quite a bit around the opening.