
Originally Posted by
Tank
Dougal, Filler plugs are not Forged or rolled high tensile steel that have been designed to withstand enormous amounts of torque like a 6 point headed Bolt.
Filler plugs are cast iron and compared to a high tensile bolt or nut they are soft as butter. That's why they have 4 large flat sides, so as you can get a shifter, spanner or stilsons on for better grip, I would like a dollar for every rounded off drain or filling plug that has been rounded off by someone using a Socket. A Socket that was designed to work correctly on a 6 or 12 point bolt head or nut. So the day will come when you round off a (soft) plug that is tighter than you have experienced so far, and you won't be able to get a shifter or spanner on until you file off the damaged (now raised up higher than the flats) corners, to each his own, but the correct way is to use a shifter or a wide (thick) jaw spanner, Regards Frank.
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