Bolt and wrench size conversion
1. Empirical formula for calculating standard bolt nut size (wrench size) (in fractional form):Standard bolt nut size (wrench size) = (bolt thread size x 3 / (molecular) bolt thread size molecular * 2)For example: wrench size = standard bolt thread corresponding to 1/2 inches (1 x 3) / (2 x 2 inches =3/4 inches)2. The empirical formula for calculating the size of the bolt and nut (wrench size) (in the form of fractions):Dimension of bolt (size of wrench) = standard bolt nut size 1/8For example: wrench size = 1/2 inch bolt corresponding increase thread (1 x 3) / (2 x 2 inches 1/8=7/8 inches)Below are a list of the small number of bolts corresponding to wrenches, so please use them. Bolt threadDimensions; bolts; nuts; dimensions (spanners); weighting; bolts; nuts; dimensions (spanners); six angles; bolts; threads
With the development of economy, many enterprises of our country imported a large number of general machinery (such as pumps, valves and equipment, etc.) and the manufacture by British standard, equipped with selection and tool for daily maintenance enterprise brings some problems, especially the corresponding bolt wrench. Here, I sort out a wrench to calculate the information for your reference.
Usually the diameter of the bolt is multiplied by 1.5 times, that is, the size of the mouth and the plum blossom. The inner six angle wrench is generally the diameter of the bolt minus 2. All wrenches, including open-ended wrenches, inner six angle wrenches, Plum wrenches, socket wrenches, etc., all of which mean the width of the head to the side of the bolt, and the bolt specification refers to the nominal diameter of the thread. For example, the outer six corner bolts of M10, whose width of the opposite side is 16mm (see GB GB/5780-86, are included in the design manual), use the 16 open-ended wrench or the plum wrench. Also, such as GB/70 - 85, six angle bolts, M10 of the six - angle bolts of the opposite side of the size of 8mm, then choose the 8mm's six - angle wrench.
