New flatbed (to me) F550 looking for stakes

[homedad]

I just replaced my 1995 F150 reg cab 4x4 with 46000 miles with this 2003 F550 4x4 DRW flatbed. I use it to haul logs from my dad's property. It came with these stake pockets but no stakes. I would like steel stakes and just make some 2x slats to contain other stuff I haul. Anyone ever see these oddly shaped pockets? I assume they are standard in some industry but can't find anything on-line. I'm afraid wood would break if a 16" oak log rolled into it. Thanks for any ideas. I'm away for the next week and a half so sorry if I don't comment right away.

 

[oosik]

What you may be looking for is narrow gage rail road iron. The pockets look like they were made to accept some form of C-channel iron. I've used oak from shipping pallets and it was pretty tough - but a 16" log, brother, I don't know.

 

[Toddao]

steel one ton side boards for one ton flat bed
???

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[homedad]

Thanks guys. I would have jumped on the CL ad but VT is a bit far to go from MI.