L7 and B7 bolts

[abutherway]

what is the difference between those bolts grade

 

[Pressed]

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Forging

http://mech.e.tripod.com

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Ddraig Breuddwydia....

http://www.tailofthedragon.com

 

[Metalguy]

They both are 4140/4142, not 4130. Metengr's comments are correct.

Gold is for the mistress - silver for the maid
Copper for the craftsman cunning in his trade.
"Good!" said the Baron, sitting in his hall
But iron - cold iron is the master of them all.
Rudyard Kipling