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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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Metric thread charts contain information regarding the internal and external diameter of the bolt or nut, the thread's spacing and the thread's minimum and maximum pitch. It also contains the ISO metric thread profile. More »

www.reference.com Science Measurements

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 »

www.reference.com Home & Garden Home Maintenance Carpentry
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A screw is a fastener that has a ridge or thread encircling the entire length of the device, while a bolt has a smooth shaft and a threaded end. Screws have heads with a depression indicating the type of driver necessary... More »

www.reference.com Home & Garden Home Maintenance Tools

Headings on a thread pitch chart include thread class, the fit when a screw is being placed in an also-threaded part; major and minor diameter; and pitch diameter, the point where the width of thread and space between th... More »

www.reference.com Home & Garden Home Maintenance Tools

Metric thread charts contain information regarding the internal and external diameter of the bolt or nut, the thread's spacing and the thread's minimum and maximum pitch. It also contains the ISO metric thread profile. More »

www.reference.com Science Measurements

Lock washers are placed between the bolt head, screw head or nut and the surface of anything that is being fastened. The main function of lock washers is to help bolts and screws retain their torque and prevent them from... More »

www.reference.com Home & Garden Home Maintenance Tools