Rotary cutter gear box - oil drain plug question

[adlertom]

Land Pride RCR 1860 rotary cutter. Why is there a small hex socket INSIDE the larger hex socket on the gear box oil drain plug?

 

[ptsg]

That's just part of the manufacturing process, in this case rotary broaching. When cutting the hex, it pushes the material in and creates like a small hex inside.

They could go with a drill after the fact to clean it out and make it look better but that costs money and at the end of the day, that's just a simple drain plug.

 

[adlertom]

Interesting, thank you.

 

[JethroB]

That's just part of the manufacturing process, in this case rotary broaching. When cutting the hex, it pushes the material in and creates like a small hex inside.

They could go with a drill after the fact to clean it out and make it look better but that costs money and at the end of the day, that's just a simple drain plug.

Interesting.

It could also be used as a backup (by me) after I stripped the other one when trying to remove.