Hardware stamping parts have sharp edges, carry rust-preventive oil on the surface, and come in small, mixed shapes. The turnover container must both prevent part leakage and prevent bump damage and surface scratching. Many workshops make do with ordinary warehouse cages, only to have small parts fall through mesh openings and bump into dents in each other, which actually increases rework.
Choose small mesh openings—under 50 mm is recommended; for small parts and spring clips, even densify to 25 mm mesh or add a bottom liner. Pick a mid-size cage with wire diameter of 4–5 mm; there is no need to over-thicken. The key is a smooth inner wall with welds ground flat, to avoid burrs scratching stamped faces.
Parts with oil on the surface drip oil inside the cage; the bottom is best made as an oil drip tray or lined with an oil-absorbent pad, to prevent oil dripping onto the floor and causing slips. Between processes requiring cleanliness, add EVA dividers or corrugated-paper layers inside the cage—one sheet per layer—to prevent sheets from stacking and scratching.
Stamping parts turn over quickly, going in and out dozens or hundreds of times a day; the cage should carry casters for pushing between workstations, with brakes to prevent rolling. Use one color and one label per part number; stick a material card outside the cage to avoid mixing parts; count quantities before merging parts into one cage when issuing from storage.
Nanjing Tongnuo Warehouse Equipment Manufacturing Co., Ltd. can build densified mesh, divider slots and oil-drip tray structures customized to stamping-part dimensions, with support for sampling one batch of actual parts first to verify no leakage and no scratching, before bulk delivery.