Serialized vs. non-serialized items
When to track individual pieces and when bulk quantity tracking is sufficient.
When you create an inventory item, one of the first decisions is whether to track it as serialized or non-serialized. This choice affects how the item is managed across its entire lifecycle — from receiving to usage to scrapping — and has direct consequences on cost tracking, tool life analytics, and service workflows.
Getting this right at setup time is important. Changing an item from non-serialized to serialized later requires reconciling the existing stock, which is operationally disruptive.
Non-serialized items
Section titled “Non-serialized items”A non-serialized item is tracked as a bulk quantity. Tooling Metrics knows how many are in each location, but not which individual piece is which.
Use non-serialized for:
- Indexable inserts — they are consumed in small numbers and the individual piece has no meaningful history to track
- Standard consumables — drills, taps, collets, tool holders that are used interchangeably and replaced when depleted
- Any item where knowing “there are 12 here” is sufficient and knowing “this specific piece has run 48 minutes” adds no value
Non-serialized items are simpler to manage. Receiving a delivery, picking for a job, and scrapping are all single-step quantity adjustments.
Serialized items
Section titled “Serialized items”A serialized item assigns a unique serial number (or data matrix code) to every individual piece. Tooling Metrics tracks the full lifecycle of each piece independently: its current location, condition, move history, usage history, service records, and cost value.
Use serialized for:
- Solid carbide end mills and drills — these are reground and reused; each piece’s service history and total runtime show how often it has been reground
- Precision boring heads and adjustable tools — individual condition, usage history, and service intervals
- Measuring instruments — calipers, micrometers, and gauges, where each piece’s location and service history matter
- Expensive holders and tooling bodies — CAT/HSK holders, milling arbors where individual wear history informs retirement decisions
- Any item where “which piece” matters, not just “how many”
The value of serialization grows over time. After several service cycles, serialized item data shows actual tool life distribution — some pieces last significantly longer than the average, and serialization reveals this.
The decision framework
Section titled “The decision framework”Ask three questions:
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Would you send this specific piece for reconditioning? If yes, serialize it — you need to track what happened to this piece to decide when to recondition and how many times it has been reconditioned.
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Does the piece accumulate a meaningful history across jobs? If an insert is used once and scrapped, serialization adds overhead with no benefit. If a boring head runs for two years across hundreds of jobs, serialization builds valuable history.
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Is the piece individually identifiable? Many cutting tool manufacturers now print data matrix codes on each piece. If the piece has a scannable identity, serialize it — the infrastructure for tracking is already there.
Practical guidance for precision machining
Section titled “Practical guidance for precision machining”In a typical precision machining shop:
| Item type | Recommendation |
|---|---|
| Indexable inserts | Non-serialized |
| Standard holders (Weldon, collet) | Non-serialized |
| Solid carbide cutting tools | Serialized |
| Adjustable / precision boring heads | Serialized |
| HSK / CAT holders | Serialized |
| Measuring instruments | Serialized |
| Standard drills / taps (HSS) | Non-serialized |
| Carbide drills (regrindable) | Serialized |
What serialization enables
Section titled “What serialization enables”When an item is serialized, Tooling Metrics adds:
- Per-piece move history — every location change recorded
- Per-piece condition tracking — condition updated at inspection or return
- Service thresholds — automatic service order generation when usage crosses a set limit (runtime, cycles, or usage cost)
- Remaining life — derived from the life limit set on the tool assembly minus actual accumulated usage
- Individual cost value — current book value of each piece, updated as usage cost is posted
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