>If I put nuts every few inches on a piece of threaded stock with
>large flat washers between each pair, would this be as effective
>for holding in concrete as bending the stock into a "J"?
No, the nuts and washers would only afford tensile resistance.
They would not afford any real twisting moment resistance. I
would opt strongly for the J-bolts that may be purchased at most
hardware supply houses that cater to contractors.
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