Stainless steel screws, nuts

Metric thread diameter is in millimeters, such as 6, 8, 10, 12, 18, 20 mm, etc., pitch is also in millimeters, such as 0.5,0.75,1,1.5,2,3, etc.Inch threads are inches in inches (equal to 25.4 millimeters per inch), such as 3/16,5/8,1/4,1/2, etc., so you use metric calipers to measure outside readings, often with irregular decimals.The British pitch is indicated by the number of teeth per inch. Set the caliper at 25.4 millimeters, align the point with one end of the thread, and the other end, such as the alignment of the threaded point, is the English thread, such as the uneven thread, and the point of the tooth should be metric thread.When measuring the pitch, it is better to pour the tip of the thread onto the chalk, and the chalk is printed clearly so that it is easy to measure. Measuring pitch should measure a length, such as 10, 15, 20 mm, etc., containing many tooth count, calculate the pitchIn inches, the specification of the thread is in English, such as G1". Metric metric units of thread are metric metric threads. Such as: M30.The English system is determined by the number of teeth in an inch (2.54 centimeters), usually at 55 degrees. The metric is the distance between the two cusps, and the pitch of the MM is usually 60 degreesFoot screw: a screw used to fasten a machine to the ground. Also called anchor bolt.The difference between the American and imperial screws with visual difficult to separate the difference between British and American, screw is inch screw thread angle is 55 degrees, and the US made screws thread angle of 60 degrees, the two standard screws are interchangeable in most of the time, but the 1/2 screw specifications can not, because the 1/2 standard is 1/2-12 inch thread teeth, and teeth is American 1/2-13.

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