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These Makers Bolt flange lock nuts are total workhorses.
You get 25 pieces in this pack, each one a 1/2-inch-13 coarse thread with that built-in flange that acts like a washer – so it distributes the load better and locks tight without needing an extra separate washer.
Grade 8 means they're heat-treated medium carbon alloy steel, so they're seriously strong – we're talking high-strength stuff for heavy-duty applications like automotive, machinery, or structural work.
The yellow zinc plating gives them solid corrosion resistance, so they hold up even if they get wet or dirty.
Wrench size is 3/4 inch, and the height runs between 0.


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