Topic hub
Truck Boxes and Jobsite Storage
Fit, materials, payload and security for storage that lives outside.
Storage that lives in a truck bed has to solve three problems a shop box never faces: it has to fit a tapered, non-standard opening, it has to survive weather and road salt, and it has to resist someone with a pry bar and two minutes.
Every guide in this cluster
Crossover, side mount, chest and underbody truck boxes: how to measure a bed properly, aluminum against steel against polymer, the payload and axle-load math, and what actually keeps a jobsite box shut.
Crossover, Side Mount, Chest and Low Profile
Every truck tool box format compared on bed space, ground access, security, weight and price, with a comparison table and a decision tree by bed length.
Truck and jobsiteHow to Measure a Truck Bed for a Tool Box
The five measurements that decide whether a truck tool box fits, how to account for liners, rail caps and tonneau rails, plus a copyable worksheet.
Truck and jobsiteDo J-Hooks Hold a Crossover Tool Box, or Must You Drill the Rails?
J-hooks are the maker's own mounting, not a shortcut. What six crossover manuals specify, where the hole really goes, torque, retightening and corrosion.
Truck and jobsiteAluminum vs Steel vs Polymer Truck Boxes
Alloys, gauges and thicknesses in truck tool boxes, weight per cubic foot, galvanic corrosion at the aluminum to steel interface, and repairability.
Truck and jobsiteJobsite Box Security: Locks, Anchors and Layers
Why the lock is rarely the failure point on a gang box, how to anchor to a slab or truck bed, delay-time budgeting, and the limits of trackers.
Truck and jobsiteTruck Box Weight, Payload and Fuel Cost
How a tool box and its contents eat payload, the lever-arm math for rear axle load transfer, tongue weight interaction, and a defensible fuel cost estimate.
Truck and jobsiteCan You Keep a Gas Can in a Truck Tool Box?
Federal rules let a tradesperson carry up to 8 gallons of gas per can in a secured box, but the box maker forbids it. Why both are right, and where the can goes.
Truck and jobsiteWhy Is There Water in My Truck Tool Box?
Condensation or a leak, then lid seal, striker, bowed lid, holes and the tonneau seam, in that order. A zone hose test and the Weather Guard parts that fit.
Truck and jobsiteTonneau Covers and Tool Boxes Together
Which tonneau cover types work with which tool box formats, how toolbox editions shorten the rails, where water gets in, and installation order.
Truck and jobsiteWhat Size Gas Strut Does a Truck Tool Box Lid Need?
Measure a tool box lid strut center to center, work out the force with F = (G x L x S) / b, and size it so the lid still holds open at -22 F.
Calculators for this topic
Client-side, no signup, formula printed on the page.
Truck Bed Tool Box Fit Finder
Enter measured bed dimensions and get the crossover size class to shop, the style your rail height suits, and how much bed floor you keep.
CalculatorSteel Gauge to Thickness Converter
Convert sheet steel gauge to thickness in inches and millimeters, weight per square foot, and relative bending stiffness. Includes the full Manufacturers Standard Gauge table.
Where to go next
Tool Chests and Roller Cabinets
Slides, steel, casters and capacity, decoded before you spend.
Topic hubModular Stacking Tool Box Systems
Packout, ToughSystem, Systainer and everything that clicks onto them.
Topic hubPortable Tool Boxes and Tool Bags
Fabric, latches, hinges and the weight you carry all day.