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What Does types of screw heads Mean?

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The threads of the screw will be the ridges that spiral up the shank with the screw, which generate it into the material when they're turned. The thread is usually an exterior a single (normally known as “male”) or https://rsanlwx104333.vblogetin.com/33598900/5-simple-techniques-for-types-of-screw-heads

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