Tutorial - Modeling flat 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:
Bottom face>>sketch.
Step 5:
While Selecting the face click convert entities.
Step 6:
Extrude it by 5mm at 45º draft.
Step 7:
While selecting top plane click reference geometry >> plane.
Step 8:
Offset the top plane by 2mm.
Step 9:
Plane1>>sketch.
Step 10:
Draw a circle of 10mm dia.
Step 11:
Extrude it by 30mm.
Step 12:
Top face>>sketch.
Step 13:
Center rectangle of 1.5mm width.
Step 14:
Extrude cut by 0.8mm.
Step 15:
Chamfer.
Step 16:
Select the lower edge. Distance=1mm and angle=45º.
Step 17:
After making threads.