Product Information Material: Zinc Plated Steel Male Thread: JIC 37° Flare, NPTF Select a Product Part NumberMale Thread SizeWorking Pressure 2503-6-49/16"-18, 1/4"-184000 PSI 2503-16-161-5/16"-12, 1"- 11-1/22000 PSI 2503-4-27/16"-20, 1/8"-274500 PSI 2503-8-83/4"-16, 1/2"-143000 PSI 2503-10-127/8"-14, 3/4"-142500 PSI 2503-8-43/4"-16, 1/4"-184000 PSI 2503-16-121-5/16"-12, 3/4"-142500 PSI 2503-6-69/16"-18, 3/8"-184000 PSI 2503-4-47/16"-20, 1/4"-184500 PSI 2503-10-87/8"-14, 1/2"-143000 PSI 2503-8-63/4"-16, 3/8"-184000 PSI 2503-12-121-1/16"-12, 3/4"-142500 PSI