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Lug Nut Pill Case Closed
Lug Nut Pill Case Open
Sean writes in with a lug nut pill case for gearheads!

This is a pill case made from a lug nut, a matching threaded bolt, and an o-ring. In the prototype shown, the lug nut is chromed and the bolt is stainless steel. Stainless steel lug nuts are available, however, and those that I manufacture in the future will feature all-stainless construction, which makes the case itself waterproof. The o-ring seal makes it watertight and, when compressed, applies tension against the threads to prevent the bolt vibrating loose. As no stainless steel bolts are available in the required large diameter and short length, a 3/4″ bolt has to be cut down to about 3/8″ to make the cap. A hacksaw is best for this operation as high-speed cutoff wheels tend to mar the threads. This is the only significant labor involved. After cutting, the thread is cleared by running through a 1/2×20 die, and all parts are cleaned ultrasonically and oven-dried. I’ll make one of these and ship it to you for $10.

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.


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