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Monthly Archives: May 2012

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Что такое крепежные винты с полукруглой головкой?

Pan head machine screws Like nails, screws are (usually) small pieces of hardware used to hold materials together. One of the main differences is that screws are designed to be able to be removed and replaced easily without damage to the screw itself or the material it connects. Most screws are made from some type of metal, and many are