Barstock thermowell, stainless steel, straight shank     model f (bsp or npt) F H G(7x16) G(9x18) G(10x19) G(12x21) W71  1/2" 1/2" bsp-m / npt-m 46 18 18 18 18  1/2" 3/4" bsp-m / npt-m 46 23 23 23 23 1/2" 1" bsp-m / npt-m 51 29 29 29 29   model f (bsp or npt) flange size nominal pressure H D(7) D(9) D(10) D(12) W111  1/2" acc. DIN 150-300# ND 10-64 46 18 18 18 18  1/2" acc. ANSI 150-300# ND100-400 51 29 29 29 29