Back Story- Went to Lowes to pick-up a slim low-profile Kobalt toolbox on Friday. The only one they had in stock didn't have the keys (it was a return). Needless to say I was pretty bummed. After trips to Home Depot, Sears, and Tractor Supply, I still didn't have a box that would fit my truck. I went back to Lowes on a whim, and someone had returned the non-slim version of the same box in the few hours I had left. It had the keys (but didn't have the foam pads), and I got a $50 discount! I think I'll be happier with the non-slim version anyway to be honest.
Iíve been wanting to do my first write-up (so be gentle) for a long time. I spent about two hours reading about how to mount the toolbox with j-hooks on TW before it was clear to me how it would work. Wanted to save someone else the time. Sorry about the crappy cellphone pics!
Step 0- Tools needed- I used the following- Cordless Drill with 3/8 inch bit, Adjustable Wrench (would be much easier with an open-end wrench), ľ x 4 inch J-Hooks with nuts, tape measurer, and pen (sharpie would work much better). Not Pictured items used in steps 8/9- Washers, 3/8 x 5 inch J-Hooks. You may also want to use some foam or rubber padding between the box and the truck. Place this before doing ANY OF THE OTHER STEPS!
Step 1- Place Box onto truck bed as close to the cab as possible, and even with regards to its horizontal alignment. Mine looked about like this on each side-
Step 2- Find j-hook points for mounting below the rail system. They look like this-
Step 3- Mark how far the box extends from the end of the cab (box width) on the rail system-
Step 4- Measure the distance from the end of the box (now marked on the rails) to the middle of the j-hook point you intend to use. You will probably have to move the toolbox out of the way to do this. This is the horizontal measurement for the hole you will be drilling. My measurement was 4 inches-
Step 5- Reposition the toolbox exactly as before if you moved it in the last step. Now, mark the box at the point the bottom rail would hit the box if it were to extend all the way to the box (I marked right above where I am holding the tape measurer). Next measure from the top of the box (while its open) to this line (not pictured). This is your vertical measurement for your hole. Mine was 3 and ĺ inches.
Step 6- Open the toolbox and using your measurements identify where you will need to drill your hole. Mark that spot. Due to the thickness of the box and the j-hook (which my measurements did not take into account), you will probably want to drill your hole on the upper left corner of your marked spot. Drill a hole using your 3/8 drill bit (not pictured).
Step 7- Run hooks through j-hook points (hook part facing down) and then into your freshly drilled holes. Should look like this-
Step 8- Bolt down the J-hook to the box. When you do this, hand tighten each side, and then go back and wrench down each side. If you donít do it this way, you will end up pulling the box to one side as you wrench it down. This is what each side should look like after you are finished -
Step 9- For added vertical stability! (Thanks buddywh1 for the help!) Mount j-hooks into box vertically and secure into j-hook point closest to the cab. Tighten down. You may have to drill for this step if your box doesn't have slots like the Kobalt boxes.
Here is the final result-
Feel free to ask any questions, and give me pointers on the write-up!