The example below applies to ISO UTS standard 60 threads. H 0866 x P H Basic triangle height P thread pitch. Where t is the length of each side of the hexagon and d is the height of the hexagon when it is made to lie on one of the bases of it.
Lateral Curved Surface Area.
Perimeter of base height. L w h l. A b a ba 2 b 2. A b 2 a 2 2ab b 2.