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16 Ιουλ 2021 · Use our bolt size chart to learn how to measure bolt size and the different dimensions of a bolt. Imperial and metric measurements included.
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FASTENER SIZE CHART. INCH/METRIC CONVERSION MATH. Fraction to Decimal: Divide top # by bottom # Decimal to Millimeter: Multiply Decimal by 25.4 Millimeter to Decimal: Multiple mm by .03937. Inch = 25.4 mm. Meter = 1,000 mm. THREAD PITCH - INCH. Thread Pitch = The distance between threads.
The charts below show metric bolt conversions to standard bolt conversions and DIN numbers for fasteners. To assist in ordering, we offer metric bolt conversion data for industrial bolts/rods, machine screws, and small-diameter fasteners, including approximate equivalency and common DIN numbers.
Below is a table common fastener sizes and lengths and their US (Inch) decimal and closest fraction equivalent. Note - Metric screw diameters usually start with "M" (M3, M4, M5...), for this chart you can just drop the 'M' from the front and add an extra at the back (M3 = 3mm, M4 = 4mm...).
to convert to millimeters: multiply inches x 25.4 to convert to inches: multiply millimeters x 0.03937 for slightly greater accuracy when converting to inches: divide millimeters by 25.4 inches metric inches metric inches metric fractional decimal mm fractional decimal mm fractional decimal mm 33/64 0.5156 13.0969 1 3/4 1.7500 44.4500 40 40. ...
For example, a 1/4-inch by 3/4-inch bolt has a diameter of 1/4 inch and a length of 3/4 inch. In the metric system, bolt size is expressed in millimeters, with the diameter being the first number and the length being the second number.
