Traditional Farmer

Well-known Member
Location
Virginia
Going thru some old auction buys,came across a 5 gal bucket of bolts with the markings on the head.O-F on one side and 10.9 on the other,appears to be metric.What are they for?
 
10.9 is a hardness marking for metric bolts. I think roughly equal to a grade 8?? O-F is probably a manufactures mark?
 

There was an Opus Ferum ?


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I just bought these tow hooks at a swap meet with those bolts, so I agree with the grade 8. I don't know what they came off, newer pickup I suspect.
 

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