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SAE 45° Flare. Male Flare x Female NPTF. Lead free fittings available in certain sizes. Temperature range: -65°F to +250°F (-53°C to +121°C). Good vibration resistance; use long nut when great resistance is required. Typical applications: LP and natural gas, flammable liquids, instrumentation, refrigeration, power steering, hydraulic and pneumatic systems.