If the exact threat is needed, buy it from Doug.

IMHO - If it is really important that the stitch holds, best thread to pack in your survival pouch is dental floss. The wax keeps it from slipping. It knots well and it is tough.
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Cliff Harrison
PonderosaSports.com
Horseshoe Bend, ID
American Redoubt
N43.9668 W116.1888