Calculation and Drawing of Hexagon Bolt: Hexagon bolt is a very common bolt, which is widely used. It can fasten connected parts by bolts, nuts and washers. The function of the ring is to prevent the surface of the connected part from being damaged when tightening the nut, and to make the pressure of the nut evenly distributed on the surface of the part. All the connected parts are processed with non threaded through holes, the diameter of which is slightly larger than the thread diameter, and the specific size can be checked.
When drawing the bolt connection, first calculate the nominal length L of the bolt. The length of bolt L ≈ K + m + G1 + G2 + B1, after calculating the length, check the national standard, and take the standard length L according to the bolt length series. The following figure shows the assembly drawing of bolt connection. The size and specification of bolt connection can be obtained from the national standard table. However, approximate dimensions can be used when drawing threaded fasteners. Among them: B1 ≈ 0.3d; m ≈ 0.8d; K ≈ 0.7d; e ≈ 2D; D2 ≈ 2.2d; C ≈ 0.15dx45; H ≈ 0.15d; e ≈ 2D.
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