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Diameter, pitch and length in millimeters define the size of a metric screw. Metric screws have pitches of coarse, fine or extra fine. Carriage and stove screws are coarse threaded. Machine screws are either coarse threa... More »

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CSGNetwork.com provides a metric chart for machine screw sizes and EngineersEdge.com offers a list of links to metric size charts for various types of screw and fastener sizes. In addition to a drill screw metric size ch... More »

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A metric screw and bolt thread chart can be found at FastenerMart.com. Unlike inch-sized screws and bolts, metric screw sizes are preceded by an "M," and the dimensions are listed in metric units. More »

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A thread pitch diameter calculator calculates the diameter of a screw, at which the width of the thread running in a helix along the screw and the width of the spaces between threads are equal. This diameter is one of th... More »

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To calculate the roof rafter length, determine the roof's pitch and the direction in which the rafters rise from the opposite exterior walls till the ridge, find out the measurements of the opposing shorter walls of the ... More »

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Roofing estimates are determined by the cost of materials, how accessible the roof is, the size of the roof and its pitch. Before hiring a roofing contractor or company, one should first check to make sure the contractor... More »

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To make a birdsmouth cut, first calculate the size and orientation of the cut based on the pitch of the roof. Then make the cut, using a chisel and a hand saw or power saw. The cut should measure no more than one-third o... More »

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