Size and thread type: -04 (1/4") NPT Female Rigid for -06 (3/8") Hydraulic Hose
Dash and Tube Size: -04 and 1/4" Industry Nominal Thread Size: 1/4-18" Actual Measurement of Male Thread OD: 17/32" or 0.54" Actual Measurement of Female Thread ID: 1/2" or 0.49"
This product will fit applications that included the following: Weatherhead 06U-204