Unknown,weird bolt

Was out looking thru my Uncles old stuff and came across this old bolt. Bolt is 5" overall and the counter sunk part (square part) is 1 3/4". The threads dont look like fine or course either, more course. The square nut has a wierd looking thing off one of the corners. Thinking it was to tighten or loosen the square nut?

We have only had one Super A and two 140's and a 179 Blackland Planter, a 185 Planter, one two row plow, a disk, and a harrow.

So do yall know what this is from?

I was thinking about useing it for the middle buster on my 179 planter so Im glad you said thats what they were for. The square part does fit perfect in the opening and I can see how the square shank keeps it from turning.

Thanks for the info

Randy

I think its interesting so I'll keep it just for conversation.

If you need a use for it, use it for pinning the swinging drawbar. My dad lost one of the bolts he used for holding swinging drawbar on the Farmall H. What to do as he didn't want to go all the way back to the farmstead. He walked along the railroad about 20', found a railroad spike. Since one always bends those bolts he didn't want a bent railroad spike in his drawbar. Later he cut the rail spike off at 4", and that is all we ever used in H, 300 and 560 to hold swinging drawbars. The square bolt doesn't bounce out near as easy as round, thus he was able to cut them short enough so we didn't bend them, plus the offset head of the rail spike turned in gave the roller less movement. Most rail spikes have to be forced in and out the first few times, but they soon wear square corners in drawbar holes.

My dad found he didn't have to walk very far on railroad to find a lifetime supply of spikes. Bear in mind this was the 50s when railroad workers were steel drivin men. The automated devices they have today may not waste as many spikes.