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Tutorial on modeling rounded counter sunk bolt in SolidWorks.
Here is the tutorial.
Step 1
Top plane>>sketch.
Step 2
Draw a circle of 15mm dia.
Step 3
Extrude it by .625mm.
Step 4
Dome feature.
Step 5
Select Top face and input the length be 1.5mm.
Step 6
Bottom face>>sketch.
Step 7
While selecting the bottom face click convert entities.
Step 8
Extrude it by 3mm and 45º draft.
Step 9
Bottom face>>Sketch.
Step 10
Click Convert entities.
Step 11
Extrude it by 30mm.
Step 12
Chamfer.
Step 13
Lower edge at 1mm and 45º.
Step 14
Front plane>>Sketch.
Step 15
Draw this rectangle.
Step 16
Extrude cut through all in both direction.
Step 17
Now we have the part body.
Step 18
After cutting threads.