I just purchased a class 6 truck and it has 8 underbid boxes. These are closed with light weight hasps and even lighter weight locks. I park this in an industrial park and there have been problems. The type of "problem" seems to be a thief that hits at night. Trailers and trucks are broken into with brute force and gas is drained out. Question:

- What is the best way to re-lock these boxes? I like the Stanley Hardware 828160 (a hardened lock), but I do not have a hasp choice.

- Is there a locking gas cap for a 50 gallon threaded cap?

- Is there anything else (like batteries) that I could protect?

Again, these are not sophisticated thieves, these are brute force thefts, at night and I believe if my truck is difficult, they just move to the next truck.

 

On my tree trucks all the cabinets had locking latches, plus boxed padlocks, plus locking pins that slid through the doors of the boxes. Super secure.

Yes you should have no problem finding a locking gas cap for a big tank, and yes I'd lock the battery box lid down too.

May thieves all burn in hell, worthless *******s.