Measuring
Hello,
As far as I know, 19/64" wire doesn't exist. The metric equivalent would be about 7.5mm, and that doesn't exist either. So either there is something amiss with your measuring device, or the wire, or how you are measuring, or any or all of the above.
Do you "zero out" your calipers before measuring? Do you have wire that is known to be either 5/16" or 9/32"? Do they measure accordingly? Are you placing the calipers on the tops of the strands, not in the flats between strands?
There is some variation between manufacturers when it comes to diameter, but midway between two nominal sizes is probably well out of range, so if in fact the wire measures 19?64" for real, it wouldn't be wire I'd want to use.
You might try fitting wedges to the core of this wire, and see what fits.
Fair leads,
Brion Toss
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