Fastenal
421439 Dynaflo High Pressure Hydraulic Female 1/4 Inch x 1/4 Inch FPT Steel Coupling TECHNICAL SPECS: Tube Outer Diameter - 1/4" Thread Size - 1/4-18" Overall Length - 1.13" Woring Pressure - 4000 PSI...
Fastenal
10864-08072 Fastenal Projection Weld Nut 7/8 Inch x 5/8 Inch
TECHNICAL SPECS:
Finish - Plain
Diameter - 3/8"
Material - Steel