FMSI > Tube Nuts > Oversize Steel Invert Flare Tube Nuts > Item # 3439 FMSIFMSI Tube NutsTube Nuts Oversize Steel Invert Flare Tube NutsOversize Steel Invert Flare Tube Nuts Item # 3439 Item # 3439, 3/16" x 1/2” - 20 Steel Invert Flare Tube Nut 34393/16" x 1/2” - 20 Steel Invert Flare Tube Nut Request Information Email This Page Download PDF Download PDF Printable Page Downloads FE The Officail Guide Book -TUBE NUTS - Ver2.pdf /Asset/a1053.jpg /Asset/a1053.jpg Close Window Unit of Measure Imperial Metric Both Specifications Tube Size N/A 3/16 in Thread Diameter N/A 1/2 in Threads per Inch N/A 20 T.P.I Hex Size N/A 1/2 in Color N/A Black AGS N/A BLF-41 Packaging N/A SP(10) HP(2) Package Type N/A Barrel Units Per Package N/A 1