Packing is usually the last item discussed and one of the more common causes of a rejected delivery. Metal parts moving against each other over a long shipment will mark each other, and a carton that cannot be identified without opening it creates work for the rest of its life.
Inner packing protects the finish
Finished parts in bulk rub during handling and transit. Depending on the finish, that ranges from harmless to a delivery-rejecting problem, and the softer or more decorative the finish, the more it matters.
The options run from loose bulk in a bag, through counted bags, to individually wrapped or compartmented packing. Cost rises along that scale, so match it to the finish rather than applying the highest level everywhere.
Counting units and how they are used downstream
Whether parts arrive in bags of a fixed count, in bulk by weight, or in kits matched to a garment set changes how much handling your own operation does.
A polybag count that matches your production batch size removes a counting operation entirely. That is often worth more than the packing difference costs.
Outer packing and transit conditions
Carton strength, stacking, weight per carton and moisture protection all depend on the shipping mode and the route. Sea freight involves humidity and long handling chains; air freight is shorter but handled more.
State the shipping mode and any known storage conditions. Where parts are moisture-sensitive, this is the point at which protection should be specified rather than assumed.
Labelling that your warehouse can act on
A carton label should let a receiving operator identify the part, the variant, the quantity and the order without opening it. Where you use barcodes or a specific label format, provide the specification rather than describing it.
Include the requirements for both inner bag labels and outer carton labels. They are frequently different and are frequently confused.
Retail and presentation packing
Where hardware is sold as a spare, a kit or a branded accessory, presentation packing becomes part of the product and needs artwork, materials and approval in the same way the part does.
Treat it as a separate specification with its own approval, not as a packing note appended to the hardware order.
What to specify
Inner packing type and count per unit, whether variants may share a carton, outer carton specification and maximum weight, moisture protection, shipping mode, inner and outer label content and format, any documents to be included, and any retail packing with its artwork.
Send a label template if you have one. Label format problems are trivial to prevent and irritating to correct after arrival.
Specify inner packing against the finish, outer packing against the shipping mode, and labelling against your own receiving process. Matching pack counts to your production batches often saves more than it costs.