Hex nuts are small threaded metallic blocks used to secure bolts. The nut and bolt together bind machine parts for assembly in piecemeal fashion. The term "hex" in "hex nut" refers to "hexagon," a six-sided polygon. The sides of a hex nut enable pliers and wrenches to grip the nut and apply torque (rotational force) to it.
Set your compass to a radius of at least two inches. Then, lightly draw a circle somewhere near the top of your page. The circle is a guide curve used to locate the points of the nut's hexagonal outline. It's not part of the nut itself.
Position your compass' sharp point on any point on the circle's circumference. Then, sweep the compass' pencil across the circumference to make a small arc that intersects it.
Position your compass' sharp point at the intersection you just made. Then, repeat Step 2 to form another arc.
Do Step 3 repeatedly to make a total of six arcs that intersect with the circle's circumference.
Form the nut's outline: Draw line segments connecting each adjacent pair of intersections from Steps 3 and 4. The result will be a hexagon.
Make the nut's hole: Decrease the radius of your compass by half. Then, draw another circle whose center is the same as the first circle you drew. This step completes the top view of the nut.
Make guidelines for the nut's side view: Draw two vertical lines that extend down from the leftmost and rightmost points of the nut's top view, to the paper's bottom edge. Also, draw a very light line connecting these two extreme left and right points in the top view.
Make guidelines for the nut's facets: For each of the nut's top view points that lie below the last guideline from Step 7, draw a vertical line from the point down to the paper's bottom edge.
Make the side view of the hex nut: Draw a rectangle a few inches below the nut's top view. Ensure the rectangle has these characteristics:
Its top and bottom edges extend from the leftmost to the rightmost guidelines you drew in step 7.
Its height is one-third its length.
Complete the nut by drawing its facets: For each facet guideline from Step 8, darken the portion of the guideline that falls within Step 9's rectangle.