50-Round 9mm Ammo Box

Below is a complete specification for the 50-round horizontal 9mm snap-lid ammo box we've been iterating toward. These dimensions are intended for a 3D-printed storage box designed around typical 9×19 mm cartridges. Cartridge Size (Design Basis) Caliber: 9×19 mm (9mm Luger) Maximum cartridge length: 29.7 mm Maximum case/bullet diameter: 10.0 mm Internal Layout Capacity: 50 rounds Rows: 5 Columns: 10 Orientation: Horizontal Individual pocket length: 31.5 mm Individual pocket width: 11.2 mm Pocket depth: 12.5 mm Divider thickness: 1.4 mm Box Dimensions Interior width: 126.6 mm Interior length: 163.1 mm Interior height: 18.0 mm Approximate exterior dimensions: Width: 132.6 mm Length: 169.1 mm Base height: 18.0 mm Lid thickness: 8.0 mm Overall closed height: 26.0 mm Wall Thickness Side walls: 3.0 mm Bottom: 3.0 mm Lid top: 8.0 mm Divider walls: 1.4 mm Snap Hinge Hardware required: None Hinge style: Snap-fit C-clips Hinge rod diameter: 7.4 mm Clearance behind rear wall to rod: 3.0 mm Snap clearance: 0.45 mm radial Clip wall thickness: 3.2 mm Clip width: 20 mm Number of hinge clips: 4 Rear hinge support width: 8 mm Front Snap Latch Center latch width: 28 mm Catch thickness: 3.2 mm Hook depth: 4.5 mm Padlock Tabs Quantity: 2 (one on each front corner) Outside boss diameter: 24 mm Boss thickness: 8 mm Padlock hole diameter: 4.5 mm Boss style: Fully round on the outside Interior wall: Flat (no intrusion into cartridge area) Printing Recommendations Material: PETG (recommended) or Nylon for maximum durability Layer height: 0.20 mm Nozzle: 0.40 mm Perimeters: 5 Top/Bottom layers: 6 Infill: 25–35% Gyroid Hinge and latch: Print with the hinge axis parallel to the build plate for better layer strength. These dimensions should provide enough clearance for standard 9mm ammunition while maintaining a compact, durable design suitable for repeated opening and closing.

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.