With Serrated ,Coarse thread,zinc plated,grade 8.8.
It fits with the nut for fastening the connection of two parts with through holes.
Slip-resistant and durablel.


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Product Review

With Serrated ,Coarse thread,zinc plated,grade 8.8.
It fits with the nut for fastening the connection of two parts with through holes.
Slip-resistant and durablel.