For you old timers who were born in the 1800s.....
What was the longest square nail sold in the 1800s? (Actually 1800's into 1910). Several websites show pictures and explain how they were originally hand forged, then machine cut. One site said during remodeling they found them up to 4" long.
Anyhow, while doing some demolition of a very old building, I came across a 5" square nail. The wood was rotted so I could easily remove the nail. It's got some rust, but not really that much. The nail is very heavy. I saved it because it's quite unique. The upper part is actually rounded somewhat.
Anyhow, this is a 5 incher, I wonder if they were made any longer? (i'm watching for bigger ones as I rip the boards apart)
By the way, several websites said that square nails hold 4 times better than the round (wire nails) sold today. Just goes to show that the old ways were better....