McMaster 2698K313 Alloy 20 Stainless Steel Pipe Fitting Medium Pressure, Bushing Adapter, 1 Male x 3 4 Female G403953351 Displacement @ 5000 psi 62 Displacement @ 5000 psi 62 cu in min 5 1 2 Inch OD Drill Pipe but need more strength to handle higher pressures Bushing Body Shape Hex Material Alloy 20 Stainless Steel Pressure Class Not Rated Fabrication Annealed Connection Type Pipe Connection Style Threaded Connection NPT Male × NPT Female Pipe Size (A) 1 Pipe Size (B) 3 4 Length 1 1 4" Hex Width 1 3 8" For Pipe Schedule 40 Pipe Material Alloy 20 Stainless Steel For Flange Class 150 Flange Material Alloy 20 Stainless Steel Specifications Met ASME B16