Quick-Action Spigots, PP with HDPE tubing adapter Standard spigot (1-1/8” - 12 straight female threads) for NALGENE carboys, accepts 5/8-inch (16-mm) I.D. tubing. Also includes HDPE tubing adapter which takes tubing with 1/4- or 5/16-inch (6-13 mm) I.D. Use Cat. No. 6432 for applications with selected solvents and other chemicals where PP spigots are unsatisfactory. Autoclavable . NOTE: Dissassemble before autoclaving.