FMSI > Brake System > Hardware > Tube Nuts > Female Tube Nuts > Item # 41S-5 (Formerly 3430) FMSIFMSI Brake SystemBrake System HardwareHardware Tube NutsTube Nuts Female Tube NutsFemale Tube Nuts Item # 41S-5 (Formerly 3430) Item # 41S-5 (Formerly 3430), Female Tube Nuts 41S-5 (Formerly 3430)Female Tube Nuts Request Information Email This Page Download PDF Download PDF Printable Page Close Window Unit of Measure Imperial Metric Both Specifications Tube Size N/A 5/16 in Thread Diameter N/A 1/2 in Thread Pitch N/A 20 T.P.I Old FMSI No. N/A 3730 Edelmann # N/A 141050 Weatherhead # N/A 1110X5