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Fasteners
All Containers›Shop by use case›Fasteners›Containers›No lot number, anywhereShop all fasteners →
Containers

No lot number, anywhere

By Dwight Davis, Founder

On this page14
No lot, no heat number, no coil, no production date.

What a lot is defined by

One part number, one production process, and the same coil or heat number of metal as provided by the metal manufacturer.

And none of the three is in our data

Ten specification fields across 251 containers and not one of them is a lot, a heat number, a coil reference or a production date.

Which is not a surprise for a container

A jar does not have a heat number. The question is whether anything we publish could carry one for the contents, and nothing does.

Four properties in this library find the same absence

The compounding property needs a lot for written standards under cGMP. The home preserving property needs a code identifying the establishment and the packing period. The electrical property needs a country of origin mark.

And this one needs a heat number

Four different schemes, four different required identifiers, and one missing capability.

Which is a pattern rather than four coincidences

We identify a catalog item. Identifying a production quantity is a different function and we do not perform it.

And no marking service either

No printing, labelling, etching or coding on any shelf in this catalog, which the electrical property states in the same terms.

So the identifier goes on by the buyer's own process

A label, a pen, a printed tag. Whatever it is, it is theirs.

Which for a lot is a fill-time discipline

Because the heat number is on the bag the fasteners arrived in, and that bag is about to be discarded.

One lot per container is the other half

Since a container holding two heats is not holding a lot, however well labelled it is.

Our case pack range makes that practical

12 to 6,370 with a median of 288, and 65 of the 251 containers are full case only.

A case pack of 12 is the useful end

Because one lot per jar means more jars, and more jars means small quantities of each.

And 93 of 251 are quote only

So more than a third of the shelf has no published price, measured as a snapshot on one day.

References

The Davis Pack Supply catalog, measured 19 October 2026 across the 251 containers on this shelf. The specification labels we publish and their coverage: Material on 251 of 251, Color on 251, Capacity on 251, Temperature range on 251, Case pack on 250, Height on 237, Neck finish on 232, Recyclable on 117, Width on 18, and Liner on 1. None of the ten is a lot number: there is no lot, heat number, coil reference or production date anywhere in our data, for the container or for anything in it. We identify a product by a dc sku and a case pack.
15 U.S.C. 5402(10) defines a lot as "a quantity of fasteners of one part number fabricated by the same production process from the same coil or heat number of metal as provided by the metal manufacturer". law.cornell.edu
The Davis Pack Supply catalog, measured 19 October 2026. 539 rows: 251 containers and 288 closures. This is the store-small-dry shelf, shared identically by nine groups, and the sewing notions property enumerates the inventory. 5 to 500 mL with a median of 177. 210 jars, 27 bottles, 12 tubs and pails, 2 tubes. 117 PET, 78 PP, 56 glass. Buyability, a snapshot: 159 of 251 available, 91 not, 1 unrecorded; 93 quote only; 65 full case only, with case packs from 12 to 6,370 and a median of 288.
Written from 15 U.S.C. 5402 and from the catalog as it stood on 19 October 2026. These are definitions from the Fastener Quality Act and nothing here describes what the Act requires of anyone, the inspection or certification scheme, the exemptions, or which consensus standards are involved. Nothing determines whether any article is a fastener within the definition or whether any quantity is a lot. We publish no lot number, heat number, coil reference or production date anywhere in our data. This shelf is shared identically by nine groups and the sewing notions property enumerates the inventory.