Head Markings - Overlapping Hexagons 1

[boltman811]

I am trying to identify the manufacturer of a cap screw. It is a grade 8 with a head marking of double overlapping hexagons. I have looked through all reference material I have and none of them show this head marking. Are any of you familiar with this?

 

[boo1]

see marking at:

http://www.uspto.gov/web/offices/tac/fqa/active.pdf

 

[boltman811]

That is one of the references I have already used. Unfortunately it is not on there. This might be an older marking I think but I can't seem to find anybody who has ever seen it before.

 

[boltman811]

Thanks! After looking again, I found what I was looking for. It wasn't exactly what I had pictured so i was overlooking it but I am sure it is the right one.