When this applies
- Recurring failures of the same component
- Long or unpredictable OEM lead times
- Multiple identical machines sharing wear parts
- A maintenance budget that can fund stock ahead of failure
Choose the right parts to stock
Stock the intersection of three things: parts that fail, parts with long replacement lead times, and parts that stop production when they fail. A cheap component with a twelve-week lead time deserves stock far more than an expensive one available next day.
- Failure history from maintenance records
- Replacement lead time, not purchase price
- Whether a failure halts the line or degrades it
- Commonality across machines on site
Specify for repeat supply
Repeat work should be quoted against a controlled drawing with a revision number, a stated material and defined inspection points. That is what lets a second supplier quote the same part without re-engineering it — and it is what keeps prices honest over time.
Batch size and shelf life
Metal parts store indefinitely with basic protection; elastomers and coatings do not. Match batch size to realistic consumption over the part's storage life rather than to the lowest unit price.
RFQ checklist
Include these in your request and suppliers can quote without a round of questions.
- List of parts with quantities per batch
- Drawing or sample for each item
- Material and any surface treatment
- Expected reorder frequency
- Packaging and preservation requirements