Tube Flare Calculator

Calculate 37° and 45° flare dimensions per SAE J514 and SAE J512 standards

Input Parameters

Results

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Flare Diameter
in
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Seat Diameter
in
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Nut Thread
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Tightening Torque
ft-lb
Note: 37° JIC is standard for high-pressure hydraulics. Torque values for steel fittings with oil-lubricated threads.

Reference

Flare OD = Tube OD × (1 + lip ratio) | 37° per SAE J514 | 45° per SAE J512