An investigation of plug and slot welds, M S Thesis, Lehigh

Deciphering Weld Symbols plug and slot weld Plug welds are used to replace factory spot welds The plug weld is formed by punching or drilling a 516” hole in the outer panel to be joined Duplicate the plug slot weld The welding symbol for slot welds is identical to that used for plug welds, except for the absence of a diameter symbol before the size Instead

plug weld and slot weld Overview of plug and slot welds, their uses, symbology and application