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Job site tool theft is a daily reality for contractors — and most job site boxes ship with the minimum lock that qualifies as secured on paper. Proven Locks' job site box security products deliver a real upgrade: closed-shackle puck lock and hasp systems engineered to resist the grinder attacks and pry bar work that end generic padlock setups in under a minute. The result is a security system that matches what's inside: American-made quality worth protecting.

Tool theft costs the construction industry more than $1 billion annually, and job site boxes are the #1 target because most are secured with a padlock and exposed hasp any bolt cutter can open in seconds.

  • Closed-shackle puck lock system eliminates the exposed shackle bolt cutters target
  • Hasp kits rated for steel job site box installation
  • Disc-detainer lock core option resists drill and pick attacks
  • American-made construction
  • Free same-day shipping for fast job site deployment

Made in USA  |  Free Same-Day Shipping  |  Lifetime Warranty

Upgrade your job site box from a stock padlock to a Proven Locks closed-shackle system — select your box type to get started.

Job Site Box other locks Proven Industries Black Accents(+$50)
Job Site Box 4825, 16.5 CU FT

Job Site Box 4825, 16.5 CU FT Job Site Boxes

$875.00

Job Site Box other locks Proven Industries Black Accents(+$50)
Job Site Box 4832, 26 CU FT

Job Site Box 4832, 26 CU FT Job Site Boxes

$1,300.00

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Frequently Asked Questions

It has a hidden hinge design and a zero-clearance lid, so the back of the box can sit directly against a wall, which blocks easy access to the rear.

The exposed shackle is the weak point, because it's the one part of a standard padlock a bolt cutter or grinder can reach directly.

Yes. Two Proven Locks padlocks are included, and they can be keyed alike with your other Proven Locks products.

Yes. The JB-CK6 kit adds two 6" locking swivel casters and two fixed casters, rated 700 lbs each and 2,800 lbs total.

The body is 16-gauge steel with laser-welded seams, and the locking arms are 7-gauge steel.

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