Function
What contacts, locates, slides, insulates or carries load?
Functional datums and inspection scope matter more than a generic ± tolerance.
The same-looking part can need a different material, tolerance or inspection plan depending on load, wear, temperature, product contact and mounting.
What contacts, locates, slides, insulates or carries load?
Which dimension or surface causes downtime when it drifts?
What record lets your team approve the part and repeat the order?
This is where a cheap quote often becomes an expensive production problem.
| Variable | Hidden failure | Required input |
|---|---|---|
| Datum | Outside dimensions may not control function | Identify primary, secondary and tertiary locators |
| Insert | Repeated fastening can damage soft threads | Confirm metal inserts and installation method |
| ESD | Colour is not proof of electrical performance | Specify exact grade and acceptance evidence |
A quotation is comparable only when every supplier is pricing the same material, revision, evidence and delivery boundary.
A sample or measured-photo set can start the feasibility review, but the quotation must state which dimensions, interfaces and assumptions control production. A controlled drawing is preferred for repeat supply.
Tolerance is reviewed by material, geometry, size, wall section, datum scheme and measurement condition. Critical functional dimensions are separated from general features in the quotation and inspection scope.
Provide the destination city or postcode, required date, quantity breaks and preferred Incoterm. DAP/DDP questions are common; VAT and importer-of-record responsibilities must be explicit.
State your preferred currency and delivery term in the RFQ. DAP/DDP questions are common; VAT and importer-of-record responsibilities must be explicit.