This link allows you to check out the fat content of nuts.
http://www.nutritiondata.com/fatty-acids.html
As a general rule nuts are high in omega six.
Per Ben Best (search for link it is on this site) article for example 63% of walnut if fat and 60% of that is omega six.
Per the site above
http://www.nutritiondata.com/facts-B00001-01c20oc.html
117 grams of walnuts contains 45 grams of 18:2 most is likely to be omega six. Walnuts do contain some omega three so are not all bad about 11 grams in the sample given.
Some nuts are lower than others.
32 brazil nuts contain 28 grams omega six - almost a gram a nut = approx 1-2 tps of fish oil to balance dependant on variety etc (total omeag sixes shown at the end of the chart)
http://www.nutritiondata.com/facts-B00001-01c20nr.html
Most diet books suggest enough to cover the palm of the hand only daily.
It is difficult I know, but if you are trying to balance the threes and sixes nuts are potentially a big factor as they are a concentrated source of omega six AS ARE MOST SEEDS sunflower, safflower, soy.................. except flax and perillia and odd exceptions.
On an evolutionary basis access to seed was limited both by season, diificulty in gathering etc.
RB