bolt nut and washer - Standard hexagon Bolt and Nut with 4.8 8.8 12.8 grade

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Standard hexagon Bolt and Nut with 4.8 8.8 12.8 grade

Standard hexagon Bolt and Nut with 4.8 8.8 12.8 grade

Screws are also called "screw" (screw), "screw" (screw rod). In fact, screws are generic terms, and screws and screw rods are different from each other. Screws are generally called wood screws; they have a pointed tip at the front and have a larger pitch. They are generally used to fasten wooden and plastic parts. The screw rod is a machine screw (mechanical screw), which is a flat head at the fro

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