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The Fragola -4AN tube nut in steel is a threaded fitting nut for AN-style tubing connections used in fluid and fuel systems. Machined to -4AN sizing, this steel tube nut secures tube ends to AN fittings and adapters. It’s a basic hardware item for assembling or repairing AN plumbing where a steel nut is specified for compatibility with matching fittings and tubing.
Fragola -4AN Tube Nut - Steel
