Create a bolt

Create the following in CAD:
Diameter = .25"
Length = 1.5 inches
28 threads / inch
UN
Flat, combined head

Cylinder: D = .25, h = 1.5

Helix:
R = (.25/2) .125,
h = 1.5,
# turns = 28 + 14 = 42





Create a triangle with sides that are .0357 long
(1.5"tall/42 turns = .035714")
Rotate the triangle onto one of the ends of the helix with the point going in, and perpendicular. (xlines added to try and show orientation)

Hint: Rotate the Helix so that the end is on one of the coordinates, then line the triangle up with the coordinates too. 

Keep the helix centered on 0,0,0, as you will not be able to snap objects to the center of it in the future.

Join the sides of the triangle together, and try to sweep it.  If you have trouble sweeping it, fillet the corners so they don't overlap with one another.  (Fillet corner w/ r = .003)

Copy yout triangle (in case you need it later)

Sweep triangle along Helix

Move cylinder onto Helix, subtract Helix from cylinder.  Keep everything centered around 0,0,0 to get it all lined up.

If you get everything lined up right, you should be able to see pointed triangles on a sectional view.

Head:

Use a cone with r = .25, height = .25, centered on one of the ends.  Union.

 

 

Hex nut + washer

Polygon, 6 sides, c, r = 0.25
extrude h = .25
find center - connect corners with lines.

Copy bolt, snap to center, subtract bolt out from center of nut

Draw a circle on top, create a cone.

Cone: r = .25, h = .25

 Use the blue arrow on the top of the cone to pull the center out:

Pull open until the cone clips off the corners.

 Copy the cone for use on the other side

 Use "Intersect" to clip off the corners.

 Clip off corners on other side.

Create a washer

Done!

Now, Choose a different style head, thread, and nut, and create another one!