Product Information Material: Zinc Plated Steel Male Thread: NPTF Select a Product Part NumberMale Thread SizeWorking Pressure 5404-81/2"-143000 PSI 5404-41/4"-185000 PSI 5404-21/8"-275000 PSI 5404-201-1/4"- 11-1/21150 PSI 5404-8-61/2"-14 x 3/8"-183000 PSI 5404-12-83/4"-14 x 1/2"-142500 PSI 5404-16-121"- 11-1/2 x 3/4"-142000 PSI 5404-123/4"-142500 PSI 5404-161"- 11-1/22000 PSI 5404-6-43/8"-18 x 1/4"-184000 PSI 5404-63/8"-184000 PSI