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 Thread Chart SAE 45 Flare Fitting 
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 Pipe Size 
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 SAE 45 Thread size 
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 1/8” 
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 5/16″ x 24 
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 3/16” 
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 3/8″ x 24 
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 1/4” 
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 7/16″ x 20 
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 5/16” 
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 1/2″ x 20 
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 3/8” 
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 5/8″-18 
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 1/2” 
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 3/4″-16 
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 5/8” 
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 7/8″-14 
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 3/4” 
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 1-1/16-14 
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 1″ 
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 – 
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 Material 
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 Threads 
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 UNEF 
NPTF  | 
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 Standards 
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 Confirming SAE, ASA & ASME specifications 
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