Flange with PN 16 thread

DNOrder numberFemale thread “Pitch diameter number of holes sizeNumber of holesBolt hole diameter
15 411910151/2″65414
20 411910203/4″75414
25 411910251″85414
32 411910321 1/4″100418
40 411910401 1/2″110418
50 411910502″125418
65 411910652 1/2″145418
80 411910803″160818
100 411911004″180818