Picture of Hex Nut LED Flashlight
nut flashlight copy.png
For several years I have been planning on doing this project, but it wasn't until now that I actually tried it. My plan was to make a miniature LED flashlight out of hex nuts, using them as the casing. I would use a matching screw as the cap for the battery compartment, and add a keychain to make it easy to carry around. 
Here's how I did it.

Step 1: Supplies

Picture of Supplies
Things I used:
  • Soldering iron and solder
  • Third hand
  • Electrical tape (heat shrink tubing would be much more effective)
  • Clamps
  • Needle-nose pliers
  • Two part epoxy
  • Super glue (Krazy glue would be better)
  • Heavy duty scissors
  • Scissors
  • 6 18mm nuts
  • 18mm bolt
  • 20mm nut
  • Washers
  • White 5mm LED
  • Tactile switch
  • Switch cap
  • Wire
  • Ring for keyring (I don't actually know what that is, I just found it in my junk box)
  • Small spring
  • Positive terminal plate
  • 3 1.5V button cells

frikkie1 month ago

Hi you could use the insulation of thin wire also to insulate the led pins.

Nichjay171 year ago
I think i will make that too

You seem to have gone a bit nuts with this one...

anasdad2 years ago
If I had time, this would be my next project! Very good job presenting it!
Thanks for posting it!
Warmtint2 years ago
great idea!! It looks really cool. The improvements will make it 100% better.

You do pretty good instructables which is just as much of a talent as the project itself. The diagram you added was a nice touch.

keep 'em coming !!!
imperio2 years ago
beautiful! .... but how much it weighs?
sjroth (author)  imperio2 years ago
About 112g including the button cells.
imperio sjroth2 years ago
maybe ... if you used aluminum ....
sjroth (author)  imperio2 years ago
Nah, that would be too soft and wouldn't seem as heavy-duty. I prefer the steel, even if it is heavier. And it's not that easy to find aluminium hardware.
kukubee2 years ago
Truly amazing! Is it too heavy to put it in your pocket and take it with you on the key chain?
sjroth (author)  kukubee2 years ago
I don't keep it on a keychain because I don't quite trust the epoxy. But if you're confident that it won't fall apart as it's swinging and knocking around, I guess it would be fine.
tritian2 years ago
that is amazing!
TSC2 years ago
Heavy for a small flash light. But Awesome!
sjroth (author)  TSC2 years ago
Yeah, I know the weight is an issue, but somehow it makes it seem more heavy-duty.
I agree, a little weight on an object makes it seem more high quality and less cheap and flimsy.
bhvm2 years ago
How about adding a superflux or even a power LED rather than the puny 5mm ones?
With the whole metal casing, you'll have decent heatsinking even for a luxeon star. Very nice idea tough. Looks tough and IS tough!
racoontnn2 years ago
A fun and safe thing to use in the plumbing trade. I often break down plastic lanterns, when to put it together with tools.
c3ralki1l3r2 years ago
I would give this a thumbs up ,if there was such button, and well what can i say this would be a good gift the the handyman of the house :D, just don't drop it in to the nuts and bolts bucket.
CR15P332 years ago
Dude, this would make a nice self defence weapon if you made it longer.
batonas2 years ago
rely nice concept 5\5 if your in any contest you got my vote.
sjroth (author)  batonas2 years ago
Thanks! I entered in the Pocket Sized Contest, and I'm waiting for it to be accepted.
Warfusion2 years ago
Very cool looking project! I love the simplicity and size!
J-Five2 years ago
It’s very resourceful and ingenious.