Dixon® Male Frac Fitting, 1 pc, Series: FIG 206, 4 in Nominal, 7-5/16 in Length, 400 psi, 70°F, Iron/Steel/Forged Steel Nut, Zinc Plated, Domestic Dixon® HUM206400CS FIG 206 1 pc Male Frac Fitting with Nut and O-Ring, 4 in Nominal, Iron/Steel/Forged Steel Nut, Domestic