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OCR: SCREWS BJECTS are sometimes held called the screw's pitch. One complete together by screws. Ver large turn of the screw moves it the distance screws can also be peen as simple of one pitch, which smaller distance machines, such flower or apple presses. than turned. moves forward A screw consists spiral groove called therel fore with much greater force screw thread that circles simple shaft. than the turning force. That why The distance between each thread 1 crews car bore into hard materials Screw (turned by screwdriver) Early press An early use tor 17 Large screw Bolt turned the screw was the simple wrench printing press Twisting forces The bolt moves forward with greater force than the screw Paper because its pitch Pressing plate inserted here shorter ALSO Very used therefore storter