To create a spring, you need a profile and an axis. Create the vertical line and the circle with dimensions shown here.

Change to an isometric view. When you have done so, your sketch should look like this:

Click Finish Sketch.

Select the Coil tool from the ribbon. 

When the dialog box pops up, the Profile is already highlighted. The Axis button is depressed, which means that you need to pick the vertical line.

When you click on the axis, a sample of the coil will be visible. If it is headed down instead of along the axis, click on ,which will change the direction.

We now need to set the parameters to get the spring to look as it should.

Click On the Method pull-down menu and 4 choices will appear.

Pitch and Revolution: defines the elevation gain (pitch) for every turn (revolution) of the helix.

Revolution and Height: defines the number of turns (revolution) and the overall height of the helix.

Pitch and Height: defines the elevation gain (pitch) for every turn and the overall height of the helix.

Spiral: defined by the pitch and the number of revolutions.

For this exercise choose Revolution and Height.  Height: 1 inch, Revolutions: 5, Taper: 0.

Save as "Coil Spring" 

To create screw threads on a bolt, you need to have the bolt already created.

To save time, open the one that was done for you.

(This exercise is based on a ½ x 3 inch bolt, 13 UNC thread.)

Open File exercise Basic Bolt

Rotate the figure to see entire bolt.

Place a Work Axis and a Work Plane in the center of the cylinder.

Select Midplane between two planes then select the top and bottom faces.

Place an Axis on the cylinder part of the bolt.

tart a 2D Sketch on the Work Plane 

Right Click in the graphics window and choose Slice Graphics or key F7. This will “remove’” the material on one side of the work plane to make the bolt profile easier to see.

In order to correctly dimension and place the triangle we are going to draw, we need to Project Geometry the line on the right side of the bolt onto the current sketch plane.

Click on the right side of the bolt. Notice how that segment is now Yellow. 

Draw a triangle with the placement on the bottom right of the bolt and dimensions as shown below. The equilateral triangle is created at the end of the cylinder, and has sides of .095 inches in length.  Use a Collinear constraint to align the bottom of the triangle with the projected edge of the bolt.

NOTE: These dimensions are NOT the exact size that the threads are on a bolt; they are for “looks” rather than manufacture. Inventor has a part library of common fasteners which are anatomically correct.

Click Finish Sketch.

Select the Coil tool from the ribbon. 

Choose the axis and make sure that the direction is correct. Click on the CUT button.

Click on the Coil Size tab. Note that the choices are the same here as they were when creating the spring.

Choose Pitch and Height, with the dimensions as shown.

Click OK. (This might take a while to accomplish depending on the speed of your computer.)

Note:

To turn “off” the work axis and the work plane, right click on each in the browser and uncheck visibility.

Save as "Usayin Bolt"